Question

The third proportional of two numbers 24 and 36 is

• A. 48
• B. 54
• C. 72
• D. 108

Answer 1

Answer:

B. 54

The third proportional of two numbers $a$ and $b$ is a number $c$ such that the ratio of $a$ to $b$ is equal to the ratio of $b$ to $c$.

This relationship is expressed as:

$\frac{a}{b} = \frac{b}{c}$

Here a=24, b=36 and we have to find c

$\frac{24}{36}=\frac{36}{c}$

$c=\frac{36\times36}{24}$

$c=54$