Home / 81,764.52-122,581.58-75,203.88

Finding the Fourth Proportional to 81,764.52, 122,581.58 and 75,203.88

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Solution

The fourth proportional to 81,764.52, 122,581.58 and 75,203.88 is: 112,745.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,764.52 : 122,581.58 = 75,203.88 : x
  2. Step 2: Convert to fraction form
    81,764.52/122,581.58 = 75,203.88/x
  3. Step 3: Cross multiply
    81,764.52x = 122,581.58 × 75,203.88
  4. Step 4: Simplify right side
    81,764.52x = 9,218,610,432.53
  5. Step 5: Solve for x
    x = 9,218,610,432.53/81,764.52
  6. Step 6: Final answer
    x = 112,745.85

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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.