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Finding the Fourth Proportional to 85,247.80, 127,725.90 and 54,046.60

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Solution

The fourth proportional to 85,247.80, 127,725.90 and 54,046.60 is: 80,977.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,247.80 : 127,725.90 = 54,046.60 : x
  2. Step 2: Convert to fraction form
    85,247.80/127,725.90 = 54,046.60/x
  3. Step 3: Cross multiply
    85,247.80x = 127,725.90 × 54,046.60
  4. Step 4: Simplify right side
    85,247.80x = 6,903,150,626.94
  5. Step 5: Solve for x
    x = 6,903,150,626.94/85,247.80
  6. Step 6: Final answer
    x = 80,977.46

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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.