Home / 81,238.78-121,865.46-22,074.76

Finding the Fourth Proportional to 81,238.78, 121,865.46 and 22,074.76

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Solution

The fourth proportional to 81,238.78, 121,865.46 and 22,074.76 is: 33,114.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,238.78 : 121,865.46 = 22,074.76 : x
  2. Step 2: Convert to fraction form
    81,238.78/121,865.46 = 22,074.76/x
  3. Step 3: Cross multiply
    81,238.78x = 121,865.46 × 22,074.76
  4. Step 4: Simplify right side
    81,238.78x = 2,690,150,781.79
  5. Step 5: Solve for x
    x = 2,690,150,781.79/81,238.78
  6. Step 6: Final answer
    x = 33,114.12

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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.