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Finding the Fourth Proportional to 69,808.84, 103,923.72 and 69,393.66

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Solution

The fourth proportional to 69,808.84, 103,923.72 and 69,393.66 is: 103,305.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,808.84 : 103,923.72 = 69,393.66 : x
  2. Step 2: Convert to fraction form
    69,808.84/103,923.72 = 69,393.66/x
  3. Step 3: Cross multiply
    69,808.84x = 103,923.72 × 69,393.66
  4. Step 4: Simplify right side
    69,808.84x = 7,211,647,291.62
  5. Step 5: Solve for x
    x = 7,211,647,291.62/69,808.84
  6. Step 6: Final answer
    x = 103,305.65

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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.