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Finding the Fourth Proportional to 68,843.73, 103,099.26 and 39,171.69

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Solution

The fourth proportional to 68,843.73, 103,099.26 and 39,171.69 is: 58,662.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,843.73 : 103,099.26 = 39,171.69 : x
  2. Step 2: Convert to fraction form
    68,843.73/103,099.26 = 39,171.69/x
  3. Step 3: Cross multiply
    68,843.73x = 103,099.26 × 39,171.69
  4. Step 4: Simplify right side
    68,843.73x = 4,038,572,251.95
  5. Step 5: Solve for x
    x = 4,038,572,251.95/68,843.73
  6. Step 6: Final answer
    x = 58,662.89

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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.