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Finding the Fourth Proportional to 71,575.70, 98,776.96 and 39,745.14

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Solution

The fourth proportional to 71,575.70, 98,776.96 and 39,745.14 is: 54,849.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,575.70 : 98,776.96 = 39,745.14 : x
  2. Step 2: Convert to fraction form
    71,575.70/98,776.96 = 39,745.14/x
  3. Step 3: Cross multiply
    71,575.70x = 98,776.96 × 39,745.14
  4. Step 4: Simplify right side
    71,575.70x = 3,925,904,103.97
  5. Step 5: Solve for x
    x = 3,925,904,103.97/71,575.70
  6. Step 6: Final answer
    x = 54,849.68

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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.