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Finding the Fourth Proportional to 71,503.43, 107,255.77 and 18,195.46

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Solution

The fourth proportional to 71,503.43, 107,255.77 and 18,195.46 is: 27,293.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,503.43 : 107,255.77 = 18,195.46 : x
  2. Step 2: Convert to fraction form
    71,503.43/107,255.77 = 18,195.46/x
  3. Step 3: Cross multiply
    71,503.43x = 107,255.77 × 18,195.46
  4. Step 4: Simplify right side
    71,503.43x = 1,951,568,112.01
  5. Step 5: Solve for x
    x = 1,951,568,112.01/71,503.43
  6. Step 6: Final answer
    x = 27,293.35

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1.5x scale

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.