Home / 69,453.20-104,139.56-61,149.90

Finding the Fourth Proportional to 69,453.20, 104,139.56 and 61,149.90

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Solution

The fourth proportional to 69,453.20, 104,139.56 and 61,149.90 is: 91,689.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,453.20 : 104,139.56 = 61,149.90 : x
  2. Step 2: Convert to fraction form
    69,453.20/104,139.56 = 61,149.90/x
  3. Step 3: Cross multiply
    69,453.20x = 104,139.56 × 61,149.90
  4. Step 4: Simplify right side
    69,453.20x = 6,368,123,680.04
  5. Step 5: Solve for x
    x = 6,368,123,680.04/69,453.20
  6. Step 6: Final answer
    x = 91,689.42

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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.