Find the third proportional to 16 and 36.

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KPTCL Assistant Exam (Mescom) SLOT-2 2017 click here to view all questions

Find the third proportional to 16 and 36.

A121

B81

C72

D144

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Correct answer is: 81 Explanation: If C is the third proportional to A and B, then $\frac{A}{B} = \frac{B}{C}$ If x is the third proportional to 16 and 36, then $\frac{16}{36} = \frac{36}{x}$ $=> \frac{4}{9} = \frac{36}{x}$ $=> x = 36 \times \frac{9}{4}$ $=> x = 9 \times 9$ $=> x = 81$ Hence, The third proportional to 16 and 36 is 81. rahul ? answered Jan 20 '2020 at 19:44 All Comments

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