Finding the Fourth Proportional to 77,171.68, 106,489.92 and 48,876.76
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Solution
The fourth proportional to 77,171.68, 106,489.92 and 48,876.76 is: 67,445.50
Step by Step Solution
- Step 1: Write the proportion equation
77,171.68 : 106,489.92 = 48,876.76 : x - Step 2: Convert to fraction form
77,171.68/106,489.92 = 48,876.76/x - Step 3: Cross multiply
77,171.68x = 106,489.92 × 48,876.76 - Step 4: Simplify right side
77,171.68x = 5,204,882,262.26 - Step 5: Solve for x
x = 5,204,882,262.26/77,171.68 - Step 6: Final answer
x = 67,445.50
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.