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Finding the Fourth Proportional to 71,490.80, 107,163.30 and 41,893.40

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Solution

The fourth proportional to 71,490.80, 107,163.30 and 41,893.40 is: 62,797.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,490.80 : 107,163.30 = 41,893.40 : x
  2. Step 2: Convert to fraction form
    71,490.80/107,163.30 = 41,893.40/x
  3. Step 3: Cross multiply
    71,490.80x = 107,163.30 × 41,893.40
  4. Step 4: Simplify right side
    71,490.80x = 4,489,434,992.22
  5. Step 5: Solve for x
    x = 4,489,434,992.22/71,490.80
  6. Step 6: Final answer
    x = 62,797.38

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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.