Home / 81,650.28-122,481.36-34,217.76

Finding the Fourth Proportional to 81,650.28, 122,481.36 and 34,217.76

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Solution

The fourth proportional to 81,650.28, 122,481.36 and 34,217.76 is: 51,329.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,650.28 : 122,481.36 = 34,217.76 : x
  2. Step 2: Convert to fraction form
    81,650.28/122,481.36 = 34,217.76/x
  3. Step 3: Cross multiply
    81,650.28x = 122,481.36 × 34,217.76
  4. Step 4: Simplify right side
    81,650.28x = 4,191,037,780.95
  5. Step 5: Solve for x
    x = 4,191,037,780.95/81,650.28
  6. Step 6: Final answer
    x = 51,329.13

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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.