Home / 81,649.17-122,508.49-39,560.61

Finding the Fourth Proportional to 81,649.17, 122,508.49 and 39,560.61

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Solution

The fourth proportional to 81,649.17, 122,508.49 and 39,560.61 is: 59,357.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,649.17 : 122,508.49 = 39,560.61 : x
  2. Step 2: Convert to fraction form
    81,649.17/122,508.49 = 39,560.61/x
  3. Step 3: Cross multiply
    81,649.17x = 122,508.49 × 39,560.61
  4. Step 4: Simplify right side
    81,649.17x = 4,846,510,594.58
  5. Step 5: Solve for x
    x = 4,846,510,594.58/81,649.17
  6. Step 6: Final answer
    x = 59,357.74

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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.