Home / 54,979.92-82,475.82-19,911.78

Finding the Fourth Proportional to 54,979.92, 82,475.82 and 19,911.78

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Solution

The fourth proportional to 54,979.92, 82,475.82 and 19,911.78 is: 29,869.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,979.92 : 82,475.82 = 19,911.78 : x
  2. Step 2: Convert to fraction form
    54,979.92/82,475.82 = 19,911.78/x
  3. Step 3: Cross multiply
    54,979.92x = 82,475.82 × 19,911.78
  4. Step 4: Simplify right side
    54,979.92x = 1,642,240,383.16
  5. Step 5: Solve for x
    x = 1,642,240,383.16/54,979.92
  6. Step 6: Final answer
    x = 29,869.82

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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.