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Finding the Fourth Proportional to 69,028.20, 103,469.40 and 39,382.20

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Solution

The fourth proportional to 69,028.20, 103,469.40 and 39,382.20 is: 59,031.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,028.20 : 103,469.40 = 39,382.20 : x
  2. Step 2: Convert to fraction form
    69,028.20/103,469.40 = 39,382.20/x
  3. Step 3: Cross multiply
    69,028.20x = 103,469.40 × 39,382.20
  4. Step 4: Simplify right side
    69,028.20x = 4,074,852,604.68
  5. Step 5: Solve for x
    x = 4,074,852,604.68/69,028.20
  6. Step 6: Final answer
    x = 59,031.71

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1.5x scale

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.