Finding the Fourth Proportional to 71,251.76, 106,902.20 and 31,836.08
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Solution
The fourth proportional to 71,251.76, 106,902.20 and 31,836.08 is: 47,765.09
Step by Step Solution
- Step 1: Write the proportion equation
71,251.76 : 106,902.20 = 31,836.08 : x - Step 2: Convert to fraction form
71,251.76/106,902.20 = 31,836.08/x - Step 3: Cross multiply
71,251.76x = 106,902.20 × 31,836.08 - Step 4: Simplify right side
71,251.76x = 3,403,346,991.38 - Step 5: Solve for x
x = 3,403,346,991.38/71,251.76 - Step 6: Final answer
x = 47,765.09
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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.