Home / 80,732.32-121,129.23-36,348.87

Finding the Fourth Proportional to 80,732.32, 121,129.23 and 36,348.87

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Solution

The fourth proportional to 80,732.32, 121,129.23 and 36,348.87 is: 54,537.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,732.32 : 121,129.23 = 36,348.87 : x
  2. Step 2: Convert to fraction form
    80,732.32/121,129.23 = 36,348.87/x
  3. Step 3: Cross multiply
    80,732.32x = 121,129.23 × 36,348.87
  4. Step 4: Simplify right side
    80,732.32x = 4,402,910,634.47
  5. Step 5: Solve for x
    x = 4,402,910,634.47/80,732.32
  6. Step 6: Final answer
    x = 54,537.15

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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.