Home / 82,076.91-123,115.36-19,747.41

Finding the Fourth Proportional to 82,076.91, 123,115.36 and 19,747.41

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Solution

The fourth proportional to 82,076.91, 123,115.36 and 19,747.41 is: 29,621.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,076.91 : 123,115.36 = 19,747.41 : x
  2. Step 2: Convert to fraction form
    82,076.91/123,115.36 = 19,747.41/x
  3. Step 3: Cross multiply
    82,076.91x = 123,115.36 × 19,747.41
  4. Step 4: Simplify right side
    82,076.91x = 2,431,209,441.85
  5. Step 5: Solve for x
    x = 2,431,209,441.85/82,076.91
  6. Step 6: Final answer
    x = 29,621.11

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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.