Home / 81,619.36-122,412.92-22,439.76

Finding the Fourth Proportional to 81,619.36, 122,412.92 and 22,439.76

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Solution

The fourth proportional to 81,619.36, 122,412.92 and 22,439.76 is: 33,655.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,619.36 : 122,412.92 = 22,439.76 : x
  2. Step 2: Convert to fraction form
    81,619.36/122,412.92 = 22,439.76/x
  3. Step 3: Cross multiply
    81,619.36x = 122,412.92 × 22,439.76
  4. Step 4: Simplify right side
    81,619.36x = 2,746,916,545.70
  5. Step 5: Solve for x
    x = 2,746,916,545.70/81,619.36
  6. Step 6: Final answer
    x = 33,655.21

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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.