Home / 81,280.92-121,882.50-34,508.28

Finding the Fourth Proportional to 81,280.92, 121,882.50 and 34,508.28

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Solution

The fourth proportional to 81,280.92, 121,882.50 and 34,508.28 is: 51,745.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,280.92 : 121,882.50 = 34,508.28 : x
  2. Step 2: Convert to fraction form
    81,280.92/121,882.50 = 34,508.28/x
  3. Step 3: Cross multiply
    81,280.92x = 121,882.50 × 34,508.28
  4. Step 4: Simplify right side
    81,280.92x = 4,205,955,437.10
  5. Step 5: Solve for x
    x = 4,205,955,437.10/81,280.92
  6. Step 6: Final answer
    x = 51,745.91

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1.5x scale

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.