Home / 55,868.92-83,781.42-20,321.80

Finding the Fourth Proportional to 55,868.92, 83,781.42 and 20,321.80

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Solution

The fourth proportional to 55,868.92, 83,781.42 and 20,321.80 is: 30,474.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,868.92 : 83,781.42 = 20,321.80 : x
  2. Step 2: Convert to fraction form
    55,868.92/83,781.42 = 20,321.80/x
  3. Step 3: Cross multiply
    55,868.92x = 83,781.42 × 20,321.80
  4. Step 4: Simplify right side
    55,868.92x = 1,702,589,260.96
  5. Step 5: Solve for x
    x = 1,702,589,260.96/55,868.92
  6. Step 6: Final answer
    x = 30,474.71

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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.