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Finding the Fourth Proportional to 71,992.80, 108,003.60 and 25,278.48

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Solution

The fourth proportional to 71,992.80, 108,003.60 and 25,278.48 is: 37,922.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,992.80 : 108,003.60 = 25,278.48 : x
  2. Step 2: Convert to fraction form
    71,992.80/108,003.60 = 25,278.48/x
  3. Step 3: Cross multiply
    71,992.80x = 108,003.60 × 25,278.48
  4. Step 4: Simplify right side
    71,992.80x = 2,730,166,842.53
  5. Step 5: Solve for x
    x = 2,730,166,842.53/71,992.80
  6. Step 6: Final answer
    x = 37,922.78

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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.