Home / 81,122.20-121,759.60-41,169.86

Finding the Fourth Proportional to 81,122.20, 121,759.60 and 41,169.86

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Solution

The fourth proportional to 81,122.20, 121,759.60 and 41,169.86 is: 61,793.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,122.20 : 121,759.60 = 41,169.86 : x
  2. Step 2: Convert to fraction form
    81,122.20/121,759.60 = 41,169.86/x
  3. Step 3: Cross multiply
    81,122.20x = 121,759.60 × 41,169.86
  4. Step 4: Simplify right side
    81,122.20x = 5,012,825,076.86
  5. Step 5: Solve for x
    x = 5,012,825,076.86/81,122.20
  6. Step 6: Final answer
    x = 61,793.51

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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.