Home / 69,171.40-103,690.68-44,140.78

Finding the Fourth Proportional to 69,171.40, 103,690.68 and 44,140.78

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Solution

The fourth proportional to 69,171.40, 103,690.68 and 44,140.78 is: 66,168.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,171.40 : 103,690.68 = 44,140.78 : x
  2. Step 2: Convert to fraction form
    69,171.40/103,690.68 = 44,140.78/x
  3. Step 3: Cross multiply
    69,171.40x = 103,690.68 × 44,140.78
  4. Step 4: Simplify right side
    69,171.40x = 4,576,987,493.93
  5. Step 5: Solve for x
    x = 4,576,987,493.93/69,171.40
  6. Step 6: Final answer
    x = 66,168.78

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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.