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Finding the Fourth Proportional to 57,076.75, 78,771.81 and 32,878.54

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Solution

The fourth proportional to 57,076.75, 78,771.81 and 32,878.54 is: 45,375.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,076.75 : 78,771.81 = 32,878.54 : x
  2. Step 2: Convert to fraction form
    57,076.75/78,771.81 = 32,878.54/x
  3. Step 3: Cross multiply
    57,076.75x = 78,771.81 × 32,878.54
  4. Step 4: Simplify right side
    57,076.75x = 2,589,902,105.96
  5. Step 5: Solve for x
    x = 2,589,902,105.96/57,076.75
  6. Step 6: Final answer
    x = 45,375.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.