Home / 82,721.78-124,022.17-26,529.90

Finding the Fourth Proportional to 82,721.78, 124,022.17 and 26,529.90

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Solution

The fourth proportional to 82,721.78, 124,022.17 and 26,529.90 is: 39,775.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,721.78 : 124,022.17 = 26,529.90 : x
  2. Step 2: Convert to fraction form
    82,721.78/124,022.17 = 26,529.90/x
  3. Step 3: Cross multiply
    82,721.78x = 124,022.17 × 26,529.90
  4. Step 4: Simplify right side
    82,721.78x = 3,290,295,767.88
  5. Step 5: Solve for x
    x = 3,290,295,767.88/82,721.78
  6. Step 6: Final answer
    x = 39,775.45

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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.