Home / 81,822.40-122,805.60-48,500.80

Finding the Fourth Proportional to 81,822.40, 122,805.60 and 48,500.80

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Solution

The fourth proportional to 81,822.40, 122,805.60 and 48,500.80 is: 72,793.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,822.40 : 122,805.60 = 48,500.80 : x
  2. Step 2: Convert to fraction form
    81,822.40/122,805.60 = 48,500.80/x
  3. Step 3: Cross multiply
    81,822.40x = 122,805.60 × 48,500.80
  4. Step 4: Simplify right side
    81,822.40x = 5,956,169,844.48
  5. Step 5: Solve for x
    x = 5,956,169,844.48/81,822.40
  6. Step 6: Final answer
    x = 72,793.88

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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.