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Finding the Fourth Proportional to 85,355.70, 127,961.25 and 35,404.62

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Solution

The fourth proportional to 85,355.70, 127,961.25 and 35,404.62 is: 53,076.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,355.70 : 127,961.25 = 35,404.62 : x
  2. Step 2: Convert to fraction form
    85,355.70/127,961.25 = 35,404.62/x
  3. Step 3: Cross multiply
    85,355.70x = 127,961.25 × 35,404.62
  4. Step 4: Simplify right side
    85,355.70x = 4,530,419,430.98
  5. Step 5: Solve for x
    x = 4,530,419,430.98/85,355.70
  6. Step 6: Final answer
    x = 53,076.94

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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.