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Finding the Fourth Proportional to 90,892.52, 136,344.54 and 28,565.48

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Solution

The fourth proportional to 90,892.52, 136,344.54 and 28,565.48 is: 42,850.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,892.52 : 136,344.54 = 28,565.48 : x
  2. Step 2: Convert to fraction form
    90,892.52/136,344.54 = 28,565.48/x
  3. Step 3: Cross multiply
    90,892.52x = 136,344.54 × 28,565.48
  4. Step 4: Simplify right side
    90,892.52x = 3,894,747,230.48
  5. Step 5: Solve for x
    x = 3,894,747,230.48/90,892.52
  6. Step 6: Final answer
    x = 42,850.03

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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.