Home / 81,375.83-121,965.17-34,530.29

Finding the Fourth Proportional to 81,375.83, 121,965.17 and 34,530.29

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Solution

The fourth proportional to 81,375.83, 121,965.17 and 34,530.29 is: 51,753.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,375.83 : 121,965.17 = 34,530.29 : x
  2. Step 2: Convert to fraction form
    81,375.83/121,965.17 = 34,530.29/x
  3. Step 3: Cross multiply
    81,375.83x = 121,965.17 × 34,530.29
  4. Step 4: Simplify right side
    81,375.83x = 4,211,491,907.52
  5. Step 5: Solve for x
    x = 4,211,491,907.52/81,375.83
  6. Step 6: Final answer
    x = 51,753.60

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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.