Home / 81,976.05-122,964.01-22,811.76

Finding the Fourth Proportional to 81,976.05, 122,964.01 and 22,811.76

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Solution

The fourth proportional to 81,976.05, 122,964.01 and 22,811.76 is: 34,217.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,976.05 : 122,964.01 = 22,811.76 : x
  2. Step 2: Convert to fraction form
    81,976.05/122,964.01 = 22,811.76/x
  3. Step 3: Cross multiply
    81,976.05x = 122,964.01 × 22,811.76
  4. Step 4: Simplify right side
    81,976.05x = 2,805,025,427.73
  5. Step 5: Solve for x
    x = 2,805,025,427.73/81,976.05
  6. Step 6: Final answer
    x = 34,217.62

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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.