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Finding the Fourth Proportional to 57,091.80, 85,644.10 and 17,648.60

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Solution

The fourth proportional to 57,091.80, 85,644.10 and 17,648.60 is: 26,474.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,091.80 : 85,644.10 = 17,648.60 : x
  2. Step 2: Convert to fraction form
    57,091.80/85,644.10 = 17,648.60/x
  3. Step 3: Cross multiply
    57,091.80x = 85,644.10 × 17,648.60
  4. Step 4: Simplify right side
    57,091.80x = 1,511,498,463.26
  5. Step 5: Solve for x
    x = 1,511,498,463.26/57,091.80
  6. Step 6: Final answer
    x = 26,474.88

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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.