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Finding the Fourth Proportional to 83,745.92, 125,613.12 and 39,411.20

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Solution

The fourth proportional to 83,745.92, 125,613.12 and 39,411.20 is: 59,114.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,745.92 : 125,613.12 = 39,411.20 : x
  2. Step 2: Convert to fraction form
    83,745.92/125,613.12 = 39,411.20/x
  3. Step 3: Cross multiply
    83,745.92x = 125,613.12 × 39,411.20
  4. Step 4: Simplify right side
    83,745.92x = 4,950,563,794.94
  5. Step 5: Solve for x
    x = 4,950,563,794.94/83,745.92
  6. Step 6: Final answer
    x = 59,114.09

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1.5x scale

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.