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Finding the Fourth Proportional to 55,481.28, 83,221.95 and 18,545.28

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Solution

The fourth proportional to 55,481.28, 83,221.95 and 18,545.28 is: 27,817.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,481.28 : 83,221.95 = 18,545.28 : x
  2. Step 2: Convert to fraction form
    55,481.28/83,221.95 = 18,545.28/x
  3. Step 3: Cross multiply
    55,481.28x = 83,221.95 × 18,545.28
  4. Step 4: Simplify right side
    55,481.28x = 1,543,374,364.90
  5. Step 5: Solve for x
    x = 1,543,374,364.90/55,481.28
  6. Step 6: Final answer
    x = 27,817.93

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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.