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Finding the Fourth Proportional to 68,951.10, 103,414.32 and 18,350.43

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Solution

The fourth proportional to 68,951.10, 103,414.32 and 18,350.43 is: 27,522.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,951.10 : 103,414.32 = 18,350.43 : x
  2. Step 2: Convert to fraction form
    68,951.10/103,414.32 = 18,350.43/x
  3. Step 3: Cross multiply
    68,951.10x = 103,414.32 × 18,350.43
  4. Step 4: Simplify right side
    68,951.10x = 1,897,697,240.16
  5. Step 5: Solve for x
    x = 1,897,697,240.16/68,951.10
  6. Step 6: Final answer
    x = 27,522.36

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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.