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Finding the Fourth Proportional to 80,700.57, 121,049.71 and 36,295.83

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Solution

The fourth proportional to 80,700.57, 121,049.71 and 36,295.83 is: 54,443.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,700.57 : 121,049.71 = 36,295.83 : x
  2. Step 2: Convert to fraction form
    80,700.57/121,049.71 = 36,295.83/x
  3. Step 3: Cross multiply
    80,700.57x = 121,049.71 × 36,295.83
  4. Step 4: Simplify right side
    80,700.57x = 4,393,599,604.97
  5. Step 5: Solve for x
    x = 4,393,599,604.97/80,700.57
  6. Step 6: Final answer
    x = 54,443.23

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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.