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Finding the Fourth Proportional to 80,392.26, 120,550.05 and 36,019.38

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Solution

The fourth proportional to 80,392.26, 120,550.05 and 36,019.38 is: 54,011.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,392.26 : 120,550.05 = 36,019.38 : x
  2. Step 2: Convert to fraction form
    80,392.26/120,550.05 = 36,019.38/x
  3. Step 3: Cross multiply
    80,392.26x = 120,550.05 × 36,019.38
  4. Step 4: Simplify right side
    80,392.26x = 4,342,138,059.97
  5. Step 5: Solve for x
    x = 4,342,138,059.97/80,392.26
  6. Step 6: Final answer
    x = 54,011.89

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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.