Finding the Fourth Proportional to 86,252.31, 129,378.42 and 38,811.96
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Solution
The fourth proportional to 86,252.31, 129,378.42 and 38,811.96 is: 58,217.92
Step by Step Solution
- Step 1: Write the proportion equation
86,252.31 : 129,378.42 = 38,811.96 : x - Step 2: Convert to fraction form
86,252.31/129,378.42 = 38,811.96/x - Step 3: Cross multiply
86,252.31x = 129,378.42 × 38,811.96 - Step 4: Simplify right side
86,252.31x = 5,021,430,061.90 - Step 5: Solve for x
x = 5,021,430,061.90/86,252.31 - Step 6: Final answer
x = 58,217.92
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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.