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Finding the Fourth Proportional to 85,265.92, 127,910.56 and 29,090.96

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Solution

The fourth proportional to 85,265.92, 127,910.56 and 29,090.96 is: 43,640.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,265.92 : 127,910.56 = 29,090.96 : x
  2. Step 2: Convert to fraction form
    85,265.92/127,910.56 = 29,090.96/x
  3. Step 3: Cross multiply
    85,265.92x = 127,910.56 × 29,090.96
  4. Step 4: Simplify right side
    85,265.92x = 3,721,040,984.54
  5. Step 5: Solve for x
    x = 3,721,040,984.54/85,265.92
  6. Step 6: Final answer
    x = 43,640.42

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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.