Home / 85,110.10-127,610.34-40,735.78

Finding the Fourth Proportional to 85,110.10, 127,610.34 and 40,735.78

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Solution

The fourth proportional to 85,110.10, 127,610.34 and 40,735.78 is: 61,077.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,110.10 : 127,610.34 = 40,735.78 : x
  2. Step 2: Convert to fraction form
    85,110.10/127,610.34 = 40,735.78/x
  3. Step 3: Cross multiply
    85,110.10x = 127,610.34 × 40,735.78
  4. Step 4: Simplify right side
    85,110.10x = 5,198,306,735.97
  5. Step 5: Solve for x
    x = 5,198,306,735.97/85,110.10
  6. Step 6: Final answer
    x = 61,077.44

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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.