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Finding the Fourth Proportional to 81,550.44, 122,306.67 and 22,390.86

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Solution

The fourth proportional to 81,550.44, 122,306.67 and 22,390.86 is: 33,581.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,550.44 : 122,306.67 = 22,390.86 : x
  2. Step 2: Convert to fraction form
    81,550.44/122,306.67 = 22,390.86/x
  3. Step 3: Cross multiply
    81,550.44x = 122,306.67 × 22,390.86
  4. Step 4: Simplify right side
    81,550.44x = 2,738,551,525.04
  5. Step 5: Solve for x
    x = 2,738,551,525.04/81,550.44
  6. Step 6: Final answer
    x = 33,581.08

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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.