Finding the Fourth Proportional to 77,160.68, 115,711.65 and 27,231.47
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Solution
The fourth proportional to 77,160.68, 115,711.65 and 27,231.47 is: 40,836.84
Step by Step Solution
- Step 1: Write the proportion equation
77,160.68 : 115,711.65 = 27,231.47 : x - Step 2: Convert to fraction form
77,160.68/115,711.65 = 27,231.47/x - Step 3: Cross multiply
77,160.68x = 115,711.65 × 27,231.47 - Step 4: Simplify right side
77,160.68x = 3,150,998,325.63 - Step 5: Solve for x
x = 3,150,998,325.63/77,160.68 - Step 6: Final answer
x = 40,836.84
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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.