Home / 80,736.30-121,115.61-21,573.90

Finding the Fourth Proportional to 80,736.30, 121,115.61 and 21,573.90

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Solution

The fourth proportional to 80,736.30, 121,115.61 and 21,573.90 is: 32,363.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,736.30 : 121,115.61 = 21,573.90 : x
  2. Step 2: Convert to fraction form
    80,736.30/121,115.61 = 21,573.90/x
  3. Step 3: Cross multiply
    80,736.30x = 121,115.61 × 21,573.90
  4. Step 4: Simplify right side
    80,736.30x = 2,612,936,058.58
  5. Step 5: Solve for x
    x = 2,612,936,058.58/80,736.30
  6. Step 6: Final answer
    x = 32,363.83

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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.