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Finding the Fourth Proportional to 83,651.92, 115,439.92 and 45,411.68

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Solution

The fourth proportional to 83,651.92, 115,439.92 and 45,411.68 is: 62,668.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,651.92 : 115,439.92 = 45,411.68 : x
  2. Step 2: Convert to fraction form
    83,651.92/115,439.92 = 45,411.68/x
  3. Step 3: Cross multiply
    83,651.92x = 115,439.92 × 45,411.68
  4. Step 4: Simplify right side
    83,651.92x = 5,242,320,706.27
  5. Step 5: Solve for x
    x = 5,242,320,706.27/83,651.92
  6. Step 6: Final answer
    x = 62,668.27

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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.