Home / 54,939.50-82,360.38-19,871.36

Finding the Fourth Proportional to 54,939.50, 82,360.38 and 19,871.36

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Solution

The fourth proportional to 54,939.50, 82,360.38 and 19,871.36 is: 29,789.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,939.50 : 82,360.38 = 19,871.36 : x
  2. Step 2: Convert to fraction form
    54,939.50/82,360.38 = 19,871.36/x
  3. Step 3: Cross multiply
    54,939.50x = 82,360.38 × 19,871.36
  4. Step 4: Simplify right side
    54,939.50x = 1,636,612,760.72
  5. Step 5: Solve for x
    x = 1,636,612,760.72/54,939.50
  6. Step 6: Final answer
    x = 29,789.36

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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.