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Finding the Fourth Proportional to 68,371.54, 102,540.91 and 21,624.42

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Solution

The fourth proportional to 68,371.54, 102,540.91 and 21,624.42 is: 32,431.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,371.54 : 102,540.91 = 21,624.42 : x
  2. Step 2: Convert to fraction form
    68,371.54/102,540.91 = 21,624.42/x
  3. Step 3: Cross multiply
    68,371.54x = 102,540.91 × 21,624.42
  4. Step 4: Simplify right side
    68,371.54x = 2,217,387,560.06
  5. Step 5: Solve for x
    x = 2,217,387,560.06/68,371.54
  6. Step 6: Final answer
    x = 32,431.44

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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.