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Finding the Fourth Proportional to 71,545.88, 98,728.37 and 39,712.27

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Solution

The fourth proportional to 71,545.88, 98,728.37 and 39,712.27 is: 54,800.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,545.88 : 98,728.37 = 39,712.27 : x
  2. Step 2: Convert to fraction form
    71,545.88/98,728.37 = 39,712.27/x
  3. Step 3: Cross multiply
    71,545.88x = 98,728.37 × 39,712.27
  4. Step 4: Simplify right side
    71,545.88x = 3,920,727,240.72
  5. Step 5: Solve for x
    x = 3,920,727,240.72/71,545.88
  6. Step 6: Final answer
    x = 54,800.19

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1.5x scale

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.