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Finding the Fourth Proportional to 82,863.60, 124,338.60 and 36,121.20

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Solution

The fourth proportional to 82,863.60, 124,338.60 and 36,121.20 is: 54,200.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,863.60 : 124,338.60 = 36,121.20 : x
  2. Step 2: Convert to fraction form
    82,863.60/124,338.60 = 36,121.20/x
  3. Step 3: Cross multiply
    82,863.60x = 124,338.60 × 36,121.20
  4. Step 4: Simplify right side
    82,863.60x = 4,491,259,438.32
  5. Step 5: Solve for x
    x = 4,491,259,438.32/82,863.60
  6. Step 6: Final answer
    x = 54,200.63

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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.