Home / 55,205.06-82,819.90-20,144.72

Finding the Fourth Proportional to 55,205.06, 82,819.90 and 20,144.72

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Solution

The fourth proportional to 55,205.06, 82,819.90 and 20,144.72 is: 30,221.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,205.06 : 82,819.90 = 20,144.72 : x
  2. Step 2: Convert to fraction form
    55,205.06/82,819.90 = 20,144.72/x
  3. Step 3: Cross multiply
    55,205.06x = 82,819.90 × 20,144.72
  4. Step 4: Simplify right side
    55,205.06x = 1,668,383,695.93
  5. Step 5: Solve for x
    x = 1,668,383,695.93/55,205.06
  6. Step 6: Final answer
    x = 30,221.57

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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.