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Finding the Fourth Proportional to 69,801.75, 104,723.28 and 40,240.80

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Solution

The fourth proportional to 69,801.75, 104,723.28 and 40,240.80 is: 60,373.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,801.75 : 104,723.28 = 40,240.80 : x
  2. Step 2: Convert to fraction form
    69,801.75/104,723.28 = 40,240.80/x
  3. Step 3: Cross multiply
    69,801.75x = 104,723.28 × 40,240.80
  4. Step 4: Simplify right side
    69,801.75x = 4,214,148,565.82
  5. Step 5: Solve for x
    x = 4,214,148,565.82/69,801.75
  6. Step 6: Final answer
    x = 60,373.11

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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.