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Finding the Fourth Proportional to 68,863.50, 95,031.24 and 38,648.78

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Solution

The fourth proportional to 68,863.50, 95,031.24 and 38,648.78 is: 53,335.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,863.50 : 95,031.24 = 38,648.78 : x
  2. Step 2: Convert to fraction form
    68,863.50/95,031.24 = 38,648.78/x
  3. Step 3: Cross multiply
    68,863.50x = 95,031.24 × 38,648.78
  4. Step 4: Simplify right side
    68,863.50x = 3,672,841,487.89
  5. Step 5: Solve for x
    x = 3,672,841,487.89/68,863.50
  6. Step 6: Final answer
    x = 53,335.10

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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.