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Finding the Fourth Proportional to 68,906.88, 95,088.42 and 38,691.68

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Solution

The fourth proportional to 68,906.88, 95,088.42 and 38,691.68 is: 53,392.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,906.88 : 95,088.42 = 38,691.68 : x
  2. Step 2: Convert to fraction form
    68,906.88/95,088.42 = 38,691.68/x
  3. Step 3: Cross multiply
    68,906.88x = 95,088.42 × 38,691.68
  4. Step 4: Simplify right side
    68,906.88x = 3,679,130,242.90
  5. Step 5: Solve for x
    x = 3,679,130,242.90/68,906.88
  6. Step 6: Final answer
    x = 53,392.79

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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.