Finding the Fourth Proportional to 77,132.81, 115,713.68 and 35,015.84
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Solution
The fourth proportional to 77,132.81, 115,713.68 and 35,015.84 is: 52,530.32
Step by Step Solution
- Step 1: Write the proportion equation
77,132.81 : 115,713.68 = 35,015.84 : x - Step 2: Convert to fraction form
77,132.81/115,713.68 = 35,015.84/x - Step 3: Cross multiply
77,132.81x = 115,713.68 × 35,015.84 - Step 4: Simplify right side
77,132.81x = 4,051,810,951.04 - Step 5: Solve for x
x = 4,051,810,951.04/77,132.81 - Step 6: Final answer
x = 52,530.32
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.