Home / 87,602.25-131,486.40-54,221.34

Finding the Fourth Proportional to 87,602.25, 131,486.40 and 54,221.34

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Solution

The fourth proportional to 87,602.25, 131,486.40 and 54,221.34 is: 81,383.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,602.25 : 131,486.40 = 54,221.34 : x
  2. Step 2: Convert to fraction form
    87,602.25/131,486.40 = 54,221.34/x
  3. Step 3: Cross multiply
    87,602.25x = 131,486.40 × 54,221.34
  4. Step 4: Simplify right side
    87,602.25x = 7,129,368,799.78
  5. Step 5: Solve for x
    x = 7,129,368,799.78/87,602.25
  6. Step 6: Final answer
    x = 81,383.40

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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.