Finding the Fourth Proportional to 81,375.90, 121,966.65 and 41,912.70
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Solution
The fourth proportional to 81,375.90, 121,966.65 and 41,912.70 is: 62,818.99
Step by Step Solution
- Step 1: Write the proportion equation
81,375.90 : 121,966.65 = 41,912.70 : x - Step 2: Convert to fraction form
81,375.90/121,966.65 = 41,912.70/x - Step 3: Cross multiply
81,375.90x = 121,966.65 × 41,912.70 - Step 4: Simplify right side
81,375.90x = 5,111,951,611.46 - Step 5: Solve for x
x = 5,111,951,611.46/81,375.90 - Step 6: Final answer
x = 62,818.99
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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.