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Finding the Fourth Proportional to 69,645.38, 104,351.84 and 67,053.78

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Solution

The fourth proportional to 69,645.38, 104,351.84 and 67,053.78 is: 100,468.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,645.38 : 104,351.84 = 67,053.78 : x
  2. Step 2: Convert to fraction form
    69,645.38/104,351.84 = 67,053.78/x
  3. Step 3: Cross multiply
    69,645.38x = 104,351.84 × 67,053.78
  4. Step 4: Simplify right side
    69,645.38x = 6,997,185,321.96
  5. Step 5: Solve for x
    x = 6,997,185,321.96/69,645.38
  6. Step 6: Final answer
    x = 100,468.77

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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.