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Finding the Fourth Proportional to 87,540.87, 120,801.44 and 51,734.21

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Solution

The fourth proportional to 87,540.87, 120,801.44 and 51,734.21 is: 71,390.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,540.87 : 120,801.44 = 51,734.21 : x
  2. Step 2: Convert to fraction form
    87,540.87/120,801.44 = 51,734.21/x
  3. Step 3: Cross multiply
    87,540.87x = 120,801.44 × 51,734.21
  4. Step 4: Simplify right side
    87,540.87x = 6,249,567,496.60
  5. Step 5: Solve for x
    x = 6,249,567,496.60/87,540.87
  6. Step 6: Final answer
    x = 71,390.28

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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.