Home / 69,850.20-104,775.30-54,103.80

Finding the Fourth Proportional to 69,850.20, 104,775.30 and 54,103.80

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Solution

The fourth proportional to 69,850.20, 104,775.30 and 54,103.80 is: 81,155.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,850.20 : 104,775.30 = 54,103.80 : x
  2. Step 2: Convert to fraction form
    69,850.20/104,775.30 = 54,103.80/x
  3. Step 3: Cross multiply
    69,850.20x = 104,775.30 × 54,103.80
  4. Step 4: Simplify right side
    69,850.20x = 5,668,741,876.14
  5. Step 5: Solve for x
    x = 5,668,741,876.14/69,850.20
  6. Step 6: Final answer
    x = 81,155.70

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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.