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Finding the Fourth Proportional to 68,242.96, 102,375.42 and 28,805.95

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Solution

The fourth proportional to 68,242.96, 102,375.42 and 28,805.95 is: 43,213.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,242.96 : 102,375.42 = 28,805.95 : x
  2. Step 2: Convert to fraction form
    68,242.96/102,375.42 = 28,805.95/x
  3. Step 3: Cross multiply
    68,242.96x = 102,375.42 × 28,805.95
  4. Step 4: Simplify right side
    68,242.96x = 2,949,021,229.75
  5. Step 5: Solve for x
    x = 2,949,021,229.75/68,242.96
  6. Step 6: Final answer
    x = 43,213.56

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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.