Home / 81,363.06-122,043.33-28,772.82

Finding the Fourth Proportional to 81,363.06, 122,043.33 and 28,772.82

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Solution

The fourth proportional to 81,363.06, 122,043.33 and 28,772.82 is: 43,158.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,363.06 : 122,043.33 = 28,772.82 : x
  2. Step 2: Convert to fraction form
    81,363.06/122,043.33 = 28,772.82/x
  3. Step 3: Cross multiply
    81,363.06x = 122,043.33 × 28,772.82
  4. Step 4: Simplify right side
    81,363.06x = 3,511,530,766.29
  5. Step 5: Solve for x
    x = 3,511,530,766.29/81,363.06
  6. Step 6: Final answer
    x = 43,158.78

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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.