Finding the Fourth Proportional to 81,432.57, 121,968.41 and 62,573.79
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Solution
The fourth proportional to 81,432.57, 121,968.41 and 62,573.79 is: 93,722.02
Step by Step Solution
- Step 1: Write the proportion equation
81,432.57 : 121,968.41 = 62,573.79 : x - Step 2: Convert to fraction form
81,432.57/121,968.41 = 62,573.79/x - Step 3: Cross multiply
81,432.57x = 121,968.41 × 62,573.79 - Step 4: Simplify right side
81,432.57x = 7,632,025,361.10 - Step 5: Solve for x
x = 7,632,025,361.10/81,432.57 - Step 6: Final answer
x = 93,722.02
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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.