Home / 81,485.06-122,227.68-22,321.24

Finding the Fourth Proportional to 81,485.06, 122,227.68 and 22,321.24

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Solution

The fourth proportional to 81,485.06, 122,227.68 and 22,321.24 is: 33,481.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,485.06 : 122,227.68 = 22,321.24 : x
  2. Step 2: Convert to fraction form
    81,485.06/122,227.68 = 22,321.24/x
  3. Step 3: Cross multiply
    81,485.06x = 122,227.68 × 22,321.24
  4. Step 4: Simplify right side
    81,485.06x = 2,728,273,379.92
  5. Step 5: Solve for x
    x = 2,728,273,379.92/81,485.06
  6. Step 6: Final answer
    x = 33,481.88

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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.