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Finding the Fourth Proportional to 55,124.40, 82,620.96 and 38,393.88

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Solution

The fourth proportional to 55,124.40, 82,620.96 and 38,393.88 is: 57,545.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,124.40 : 82,620.96 = 38,393.88 : x
  2. Step 2: Convert to fraction form
    55,124.40/82,620.96 = 38,393.88/x
  3. Step 3: Cross multiply
    55,124.40x = 82,620.96 × 38,393.88
  4. Step 4: Simplify right side
    55,124.40x = 3,172,139,223.72
  5. Step 5: Solve for x
    x = 3,172,139,223.72/55,124.40
  6. Step 6: Final answer
    x = 57,545.10

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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.