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Finding the Fourth Proportional to 57,286.80, 86,027.40 and 55,537.20

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Solution

The fourth proportional to 57,286.80, 86,027.40 and 55,537.20 is: 83,400.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,286.80 : 86,027.40 = 55,537.20 : x
  2. Step 2: Convert to fraction form
    57,286.80/86,027.40 = 55,537.20/x
  3. Step 3: Cross multiply
    57,286.80x = 86,027.40 × 55,537.20
  4. Step 4: Simplify right side
    57,286.80x = 4,777,720,919.28
  5. Step 5: Solve for x
    x = 4,777,720,919.28/57,286.80
  6. Step 6: Final answer
    x = 83,400.03

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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.