Home / 81,884.28-122,753.38-31,952.76

Finding the Fourth Proportional to 81,884.28, 122,753.38 and 31,952.76

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Solution

The fourth proportional to 81,884.28, 122,753.38 and 31,952.76 is: 47,900.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,884.28 : 122,753.38 = 31,952.76 : x
  2. Step 2: Convert to fraction form
    81,884.28/122,753.38 = 31,952.76/x
  3. Step 3: Cross multiply
    81,884.28x = 122,753.38 × 31,952.76
  4. Step 4: Simplify right side
    81,884.28x = 3,922,309,290.33
  5. Step 5: Solve for x
    x = 3,922,309,290.33/81,884.28
  6. Step 6: Final answer
    x = 47,900.64

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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.