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Finding the Fourth Proportional to 71,403.52, 98,537.68 and 39,572.96

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Solution

The fourth proportional to 71,403.52, 98,537.68 and 39,572.96 is: 54,611.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,403.52 : 98,537.68 = 39,572.96 : x
  2. Step 2: Convert to fraction form
    71,403.52/98,537.68 = 39,572.96/x
  3. Step 3: Cross multiply
    71,403.52x = 98,537.68 × 39,572.96
  4. Step 4: Simplify right side
    71,403.52x = 3,899,427,669.13
  5. Step 5: Solve for x
    x = 3,899,427,669.13/71,403.52
  6. Step 6: Final answer
    x = 54,611.14

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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.