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Finding the Fourth Proportional to 71,390.80, 107,013.30 and 41,793.40

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Solution

The fourth proportional to 71,390.80, 107,013.30 and 41,793.40 is: 62,647.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,390.80 : 107,013.30 = 41,793.40 : x
  2. Step 2: Convert to fraction form
    71,390.80/107,013.30 = 41,793.40/x
  3. Step 3: Cross multiply
    71,390.80x = 107,013.30 × 41,793.40
  4. Step 4: Simplify right side
    71,390.80x = 4,472,449,652.22
  5. Step 5: Solve for x
    x = 4,472,449,652.22/71,390.80
  6. Step 6: Final answer
    x = 62,647.42

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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.