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Finding the Fourth Proportional to 85,174.60, 127,786.56 and 35,245.48

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Solution

The fourth proportional to 85,174.60, 127,786.56 and 35,245.48 is: 52,878.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,174.60 : 127,786.56 = 35,245.48 : x
  2. Step 2: Convert to fraction form
    85,174.60/127,786.56 = 35,245.48/x
  3. Step 3: Cross multiply
    85,174.60x = 127,786.56 × 35,245.48
  4. Step 4: Simplify right side
    85,174.60x = 4,503,898,644.75
  5. Step 5: Solve for x
    x = 4,503,898,644.75/85,174.60
  6. Step 6: Final answer
    x = 52,878.42

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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.