Home / 87,193.82-130,778.25-28,021.70

Finding the Fourth Proportional to 87,193.82, 130,778.25 and 28,021.70

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Solution

The fourth proportional to 87,193.82, 130,778.25 and 28,021.70 is: 42,028.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,193.82 : 130,778.25 = 28,021.70 : x
  2. Step 2: Convert to fraction form
    87,193.82/130,778.25 = 28,021.70/x
  3. Step 3: Cross multiply
    87,193.82x = 130,778.25 × 28,021.70
  4. Step 4: Simplify right side
    87,193.82x = 3,664,628,888.03
  5. Step 5: Solve for x
    x = 3,664,628,888.03/87,193.82
  6. Step 6: Final answer
    x = 42,028.54

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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.