# Of three

Of three positive numbers the product of the first and second is 42, second and third is 56 and that of third and first is 48. Find the third number.

## Correct answer:

**Showing 1 comment:**

**Dr Math**

A*B= 42

B*C=56

C*A=48

AB*BC*CA=42*56*48

=>A*B*C=√(42*56*48) = 336

C=336/A*B = 336/42=8

Third number is 8

B*C=56

C*A=48

AB*BC*CA=42*56*48

=>A*B*C=√(42*56*48) = 336

C=336/A*B = 336/42=8

Third number is 8

Tips for related online calculators

Do you have a system of equations and are looking for calculator system of linear equations?

### You need to know the following knowledge to solve this word math problem:

## Related math problems and questions:

- Table 3x3

Table with numbers 3x3 in the first row: 66,24,33 in the second row: 57, ?, 19 in the third row: 18,45,60 What number comes ar mark ?. Maybe the numbers: 22,46,45,47 - Product 3108

The product of 3 numbers is 42. The first is 1.5 times larger than the second number, and the third is 3.5 times larger than the second number. What numbers are these? - The product

The product of the three numbers is 224. The first is 10, and the second is 50 times smaller than the first. Calculate the third number. - Calculate 65044

The product of the three numbers is 224. The first is 10, and the second is 50 times smaller than the first. Calculate the third number.

- Four numbers

The first number is 50% second. The second number is 40% third. The third number is 20% of the fourth. The sum is 396. What are the numbers? - Numbers 5677

The first number is 50% of the second, the second number is 40% of the third, and the third number is 20% of the fourth. The sum is 396. What are the numbers? - Numbers 80756

The first number is 50% of the second, the second number is 40% of the third, and the third number is 20% of the fourth. The sum of the numbers is 396. Which numbers are these??