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Finding the Fourth Proportional to 69,808.97, 103,923.90 and 69,393.79

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Solution

The fourth proportional to 69,808.97, 103,923.90 and 69,393.79 is: 103,305.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,808.97 : 103,923.90 = 69,393.79 : x
  2. Step 2: Convert to fraction form
    69,808.97/103,923.90 = 69,393.79/x
  3. Step 3: Cross multiply
    69,808.97x = 103,923.90 × 69,393.79
  4. Step 4: Simplify right side
    69,808.97x = 7,211,673,292.58
  5. Step 5: Solve for x
    x = 7,211,673,292.58/69,808.97
  6. Step 6: Final answer
    x = 103,305.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.