Home / 55,757.30-83,608.26-20,217.20

Finding the Fourth Proportional to 55,757.30, 83,608.26 and 20,217.20

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Solution

The fourth proportional to 55,757.30, 83,608.26 and 20,217.20 is: 30,315.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,757.30 : 83,608.26 = 20,217.20 : x
  2. Step 2: Convert to fraction form
    55,757.30/83,608.26 = 20,217.20/x
  3. Step 3: Cross multiply
    55,757.30x = 83,608.26 × 20,217.20
  4. Step 4: Simplify right side
    55,757.30x = 1,690,324,914.07
  5. Step 5: Solve for x
    x = 1,690,324,914.07/55,757.30
  6. Step 6: Final answer
    x = 30,315.76

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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.