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Finding the Fourth Proportional to 68,863.20, 103,294.59 and 38,863.83

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Solution

The fourth proportional to 68,863.20, 103,294.59 and 38,863.83 is: 58,295.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,863.20 : 103,294.59 = 38,863.83 : x
  2. Step 2: Convert to fraction form
    68,863.20/103,294.59 = 38,863.83/x
  3. Step 3: Cross multiply
    68,863.20x = 103,294.59 × 38,863.83
  4. Step 4: Simplify right side
    68,863.20x = 4,014,423,385.68
  5. Step 5: Solve for x
    x = 4,014,423,385.68/68,863.20
  6. Step 6: Final answer
    x = 58,295.63

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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.