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Finding the Fourth Proportional to 71,381.43, 98,506.17 and 39,550.32

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Solution

The fourth proportional to 71,381.43, 98,506.17 and 39,550.32 is: 54,579.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,381.43 : 98,506.17 = 39,550.32 : x
  2. Step 2: Convert to fraction form
    71,381.43/98,506.17 = 39,550.32/x
  3. Step 3: Cross multiply
    71,381.43x = 98,506.17 × 39,550.32
  4. Step 4: Simplify right side
    71,381.43x = 3,895,950,545.47
  5. Step 5: Solve for x
    x = 3,895,950,545.47/71,381.43
  6. Step 6: Final answer
    x = 54,579.33

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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.