Home / 82,018.72-123,029.28-25,857.76

Finding the Fourth Proportional to 82,018.72, 123,029.28 and 25,857.76

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Solution

The fourth proportional to 82,018.72, 123,029.28 and 25,857.76 is: 38,787.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,018.72 : 123,029.28 = 25,857.76 : x
  2. Step 2: Convert to fraction form
    82,018.72/123,029.28 = 25,857.76/x
  3. Step 3: Cross multiply
    82,018.72x = 123,029.28 × 25,857.76
  4. Step 4: Simplify right side
    82,018.72x = 3,181,261,595.21
  5. Step 5: Solve for x
    x = 3,181,261,595.21/82,018.72
  6. Step 6: Final answer
    x = 38,787.02

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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.