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Finding the Fourth Proportional to 40,481.76, 60,712.84 and 20,750.16

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Solution

The fourth proportional to 40,481.76, 60,712.84 and 20,750.16 is: 31,120.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,481.76 : 60,712.84 = 20,750.16 : x
  2. Step 2: Convert to fraction form
    40,481.76/60,712.84 = 20,750.16/x
  3. Step 3: Cross multiply
    40,481.76x = 60,712.84 × 20,750.16
  4. Step 4: Simplify right side
    40,481.76x = 1,259,801,144.05
  5. Step 5: Solve for x
    x = 1,259,801,144.05/40,481.76
  6. Step 6: Final answer
    x = 31,120.22

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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.