Home / 81,286.52-121,840.61-41,845.73

Finding the Fourth Proportional to 81,286.52, 121,840.61 and 41,845.73

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Solution

The fourth proportional to 81,286.52, 121,840.61 and 41,845.73 is: 62,722.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,286.52 : 121,840.61 = 41,845.73 : x
  2. Step 2: Convert to fraction form
    81,286.52/121,840.61 = 41,845.73/x
  3. Step 3: Cross multiply
    81,286.52x = 121,840.61 × 41,845.73
  4. Step 4: Simplify right side
    81,286.52x = 5,098,508,450.66
  5. Step 5: Solve for x
    x = 5,098,508,450.66/81,286.52
  6. Step 6: Final answer
    x = 62,722.68

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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.