Home / 71,280.20-106,920.30-29,721.80

Finding the Fourth Proportional to 71,280.20, 106,920.30 and 29,721.80

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Solution

The fourth proportional to 71,280.20, 106,920.30 and 29,721.80 is: 44,582.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,280.20 : 106,920.30 = 29,721.80 : x
  2. Step 2: Convert to fraction form
    71,280.20/106,920.30 = 29,721.80/x
  3. Step 3: Cross multiply
    71,280.20x = 106,920.30 × 29,721.80
  4. Step 4: Simplify right side
    71,280.20x = 3,177,863,772.54
  5. Step 5: Solve for x
    x = 3,177,863,772.54/71,280.20
  6. Step 6: Final answer
    x = 44,582.70

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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.