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Finding the Fourth Proportional to 71,404.80, 107,004.80 and 52,537.60

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Solution

The fourth proportional to 71,404.80, 107,004.80 and 52,537.60 is: 78,731.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,404.80 : 107,004.80 = 52,537.60 : x
  2. Step 2: Convert to fraction form
    71,404.80/107,004.80 = 52,537.60/x
  3. Step 3: Cross multiply
    71,404.80x = 107,004.80 × 52,537.60
  4. Step 4: Simplify right side
    71,404.80x = 5,621,775,380.48
  5. Step 5: Solve for x
    x = 5,621,775,380.48/71,404.80
  6. Step 6: Final answer
    x = 78,731.06

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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.