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Finding the Fourth Proportional to 71,391.80, 107,014.80 and 41,794.40

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Solution

The fourth proportional to 71,391.80, 107,014.80 and 41,794.40 is: 62,648.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,391.80 : 107,014.80 = 41,794.40 : x
  2. Step 2: Convert to fraction form
    71,391.80/107,014.80 = 41,794.40/x
  3. Step 3: Cross multiply
    71,391.80x = 107,014.80 × 41,794.40
  4. Step 4: Simplify right side
    71,391.80x = 4,472,619,357.12
  5. Step 5: Solve for x
    x = 4,472,619,357.12/71,391.80
  6. Step 6: Final answer
    x = 62,648.92

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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.