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Finding the Fourth Proportional to 100,044.62, 138,056.42 and 54,713.78

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Solution

The fourth proportional to 100,044.62, 138,056.42 and 54,713.78 is: 75,502.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,044.62 : 138,056.42 = 54,713.78 : x
  2. Step 2: Convert to fraction form
    100,044.62/138,056.42 = 54,713.78/x
  3. Step 3: Cross multiply
    100,044.62x = 138,056.42 × 54,713.78
  4. Step 4: Simplify right side
    100,044.62x = 7,553,587,627.62
  5. Step 5: Solve for x
    x = 7,553,587,627.62/100,044.62
  6. Step 6: Final answer
    x = 75,502.19

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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.