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Finding the Fourth Proportional to 68,962.18, 103,414.11 and 21,564.55

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Solution

The fourth proportional to 68,962.18, 103,414.11 and 21,564.55 is: 32,337.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,962.18 : 103,414.11 = 21,564.55 : x
  2. Step 2: Convert to fraction form
    68,962.18/103,414.11 = 21,564.55/x
  3. Step 3: Cross multiply
    68,962.18x = 103,414.11 × 21,564.55
  4. Step 4: Simplify right side
    68,962.18x = 2,230,078,745.80
  5. Step 5: Solve for x
    x = 2,230,078,745.80/68,962.18
  6. Step 6: Final answer
    x = 32,337.71

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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.