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Finding the Fourth Proportional to 85,013.68, 127,515.89 and 25,844.73

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Solution

The fourth proportional to 85,013.68, 127,515.89 and 25,844.73 is: 38,765.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,013.68 : 127,515.89 = 25,844.73 : x
  2. Step 2: Convert to fraction form
    85,013.68/127,515.89 = 25,844.73/x
  3. Step 3: Cross multiply
    85,013.68x = 127,515.89 × 25,844.73
  4. Step 4: Simplify right side
    85,013.68x = 3,295,612,980.96
  5. Step 5: Solve for x
    x = 3,295,612,980.96/85,013.68
  6. Step 6: Final answer
    x = 38,765.68

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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.