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Finding the Fourth Proportional to 87,570.60, 120,850.41 and 51,791.28

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Solution

The fourth proportional to 87,570.60, 120,850.41 and 51,791.28 is: 71,473.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,570.60 : 120,850.41 = 51,791.28 : x
  2. Step 2: Convert to fraction form
    87,570.60/120,850.41 = 51,791.28/x
  3. Step 3: Cross multiply
    87,570.60x = 120,850.41 × 51,791.28
  4. Step 4: Simplify right side
    87,570.60x = 6,258,997,422.42
  5. Step 5: Solve for x
    x = 6,258,997,422.42/87,570.60
  6. Step 6: Final answer
    x = 71,473.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.