Home / 45,028.80-67,581.60-20,107.20

Finding the Fourth Proportional to 45,028.80, 67,581.60 and 20,107.20

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Solution

The fourth proportional to 45,028.80, 67,581.60 and 20,107.20 is: 30,177.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,028.80 : 67,581.60 = 20,107.20 : x
  2. Step 2: Convert to fraction form
    45,028.80/67,581.60 = 20,107.20/x
  3. Step 3: Cross multiply
    45,028.80x = 67,581.60 × 20,107.20
  4. Step 4: Simplify right side
    45,028.80x = 1,358,876,747.52
  5. Step 5: Solve for x
    x = 1,358,876,747.52/45,028.80
  6. Step 6: Final answer
    x = 30,177.95

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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.