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Finding the Fourth Proportional to 87,110.92, 130,617.78 and 42,641.92

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Solution

The fourth proportional to 87,110.92, 130,617.78 and 42,641.92 is: 63,939.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,110.92 : 130,617.78 = 42,641.92 : x
  2. Step 2: Convert to fraction form
    87,110.92/130,617.78 = 42,641.92/x
  3. Step 3: Cross multiply
    87,110.92x = 130,617.78 × 42,641.92
  4. Step 4: Simplify right side
    87,110.92x = 5,569,792,925.34
  5. Step 5: Solve for x
    x = 5,569,792,925.34/87,110.92
  6. Step 6: Final answer
    x = 63,939.09

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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.