Home / 55,517.55-83,320.11-20,481.81

Finding the Fourth Proportional to 55,517.55, 83,320.11 and 20,481.81

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Solution

The fourth proportional to 55,517.55, 83,320.11 and 20,481.81 is: 30,738.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,517.55 : 83,320.11 = 20,481.81 : x
  2. Step 2: Convert to fraction form
    55,517.55/83,320.11 = 20,481.81/x
  3. Step 3: Cross multiply
    55,517.55x = 83,320.11 × 20,481.81
  4. Step 4: Simplify right side
    55,517.55x = 1,706,546,662.20
  5. Step 5: Solve for x
    x = 1,706,546,662.20/55,517.55
  6. Step 6: Final answer
    x = 30,738.87

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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.