Home / 82,440.73-123,671-29,121.76

Finding the Fourth Proportional to 82,440.73, 123,671 and 29,121.76

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Solution

The fourth proportional to 82,440.73, 123,671 and 29,121.76 is: 43,686.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,440.73 : 123,671 = 29,121.76 : x
  2. Step 2: Convert to fraction form
    82,440.73/123,671 = 29,121.76/x
  3. Step 3: Cross multiply
    82,440.73x = 123,671 × 29,121.76
  4. Step 4: Simplify right side
    82,440.73x = 3,601,517,180.96
  5. Step 5: Solve for x
    x = 3,601,517,180.96/82,440.73
  6. Step 6: Final answer
    x = 43,686.14

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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.