Home / 69,268.34-103,976.33-66,758.78

Finding the Fourth Proportional to 69,268.34, 103,976.33 and 66,758.78

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Solution

The fourth proportional to 69,268.34, 103,976.33 and 66,758.78 is: 100,209.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,268.34 : 103,976.33 = 66,758.78 : x
  2. Step 2: Convert to fraction form
    69,268.34/103,976.33 = 66,758.78/x
  3. Step 3: Cross multiply
    69,268.34x = 103,976.33 × 66,758.78
  4. Step 4: Simplify right side
    69,268.34x = 6,941,332,086.00
  5. Step 5: Solve for x
    x = 6,941,332,086.00/69,268.34
  6. Step 6: Final answer
    x = 100,209.31

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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.