Finding the Fourth Proportional to 86,415.05, 129,621.27 and 52,691.00
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Solution
The fourth proportional to 86,415.05, 129,621.27 and 52,691.00 is: 79,035.70
Step by Step Solution
- Step 1: Write the proportion equation
86,415.05 : 129,621.27 = 52,691.00 : x - Step 2: Convert to fraction form
86,415.05/129,621.27 = 52,691.00/x - Step 3: Cross multiply
86,415.05x = 129,621.27 × 52,691.00 - Step 4: Simplify right side
86,415.05x = 6,829,874,265.70 - Step 5: Solve for x
x = 6,829,874,265.70/86,415.05 - Step 6: Final answer
x = 79,035.70
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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.