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Finding the Fourth Proportional to 71,355.62, 107,040.49 and 26,388.78

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Solution

The fourth proportional to 71,355.62, 107,040.49 and 26,388.78 is: 39,585.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,355.62 : 107,040.49 = 26,388.78 : x
  2. Step 2: Convert to fraction form
    71,355.62/107,040.49 = 26,388.78/x
  3. Step 3: Cross multiply
    71,355.62x = 107,040.49 × 26,388.78
  4. Step 4: Simplify right side
    71,355.62x = 2,824,667,474.33
  5. Step 5: Solve for x
    x = 2,824,667,474.33/71,355.62
  6. Step 6: Final answer
    x = 39,585.77

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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.