Home / 81,406.20-122,151.00-38,759.90

Finding the Fourth Proportional to 81,406.20, 122,151.00 and 38,759.90

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Solution

The fourth proportional to 81,406.20, 122,151.00 and 38,759.90 is: 58,159.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,406.20 : 122,151.00 = 38,759.90 : x
  2. Step 2: Convert to fraction form
    81,406.20/122,151.00 = 38,759.90/x
  3. Step 3: Cross multiply
    81,406.20x = 122,151.00 × 38,759.90
  4. Step 4: Simplify right side
    81,406.20x = 4,734,560,766.59
  5. Step 5: Solve for x
    x = 4,734,560,766.59/81,406.20
  6. Step 6: Final answer
    x = 58,159.71

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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.