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Finding the Fourth Proportional to 85,003.75, 127,510.89 and 25,843.78

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Solution

The fourth proportional to 85,003.75, 127,510.89 and 25,843.78 is: 38,767.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,003.75 : 127,510.89 = 25,843.78 : x
  2. Step 2: Convert to fraction form
    85,003.75/127,510.89 = 25,843.78/x
  3. Step 3: Cross multiply
    85,003.75x = 127,510.89 × 25,843.78
  4. Step 4: Simplify right side
    85,003.75x = 3,295,363,388.76
  5. Step 5: Solve for x
    x = 3,295,363,388.76/85,003.75
  6. Step 6: Final answer
    x = 38,767.27

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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.