Finding the Fourth Proportional to 71,531.28, 106,815.12 and 58,409.28
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Solution
The fourth proportional to 71,531.28, 106,815.12 and 58,409.28 is: 87,220.50
Step by Step Solution
- Step 1: Write the proportion equation
71,531.28 : 106,815.12 = 58,409.28 : x - Step 2: Convert to fraction form
71,531.28/106,815.12 = 58,409.28/x - Step 3: Cross multiply
71,531.28x = 106,815.12 × 58,409.28 - Step 4: Simplify right side
71,531.28x = 6,238,994,252.31 - Step 5: Solve for x
x = 6,238,994,252.31/71,531.28 - Step 6: Final answer
x = 87,220.50
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.