Home / 87,692.22-121,016.43-51,881.31

Finding the Fourth Proportional to 87,692.22, 121,016.43 and 51,881.31

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Solution

The fourth proportional to 87,692.22, 121,016.43 and 51,881.31 is: 71,596.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,692.22 : 121,016.43 = 51,881.31 : x
  2. Step 2: Convert to fraction form
    87,692.22/121,016.43 = 51,881.31/x
  3. Step 3: Cross multiply
    87,692.22x = 121,016.43 × 51,881.31
  4. Step 4: Simplify right side
    87,692.22x = 6,278,490,919.92
  5. Step 5: Solve for x
    x = 6,278,490,919.92/87,692.22
  6. Step 6: Final answer
    x = 71,596.90

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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.