Home / 81,029.70-121,508.10-36,633.60

Finding the Fourth Proportional to 81,029.70, 121,508.10 and 36,633.60

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Solution

The fourth proportional to 81,029.70, 121,508.10 and 36,633.60 is: 54,933.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,029.70 : 121,508.10 = 36,633.60 : x
  2. Step 2: Convert to fraction form
    81,029.70/121,508.10 = 36,633.60/x
  3. Step 3: Cross multiply
    81,029.70x = 121,508.10 × 36,633.60
  4. Step 4: Simplify right side
    81,029.70x = 4,451,279,132.16
  5. Step 5: Solve for x
    x = 4,451,279,132.16/81,029.70
  6. Step 6: Final answer
    x = 54,933.92

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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.