Home / 87,738.14-131,616.43-28,578.42

Finding the Fourth Proportional to 87,738.14, 131,616.43 and 28,578.42

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Solution

The fourth proportional to 87,738.14, 131,616.43 and 28,578.42 is: 42,870.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,738.14 : 131,616.43 = 28,578.42 : x
  2. Step 2: Convert to fraction form
    87,738.14/131,616.43 = 28,578.42/x
  3. Step 3: Cross multiply
    87,738.14x = 131,616.43 × 28,578.42
  4. Step 4: Simplify right side
    87,738.14x = 3,761,389,615.44
  5. Step 5: Solve for x
    x = 3,761,389,615.44/87,738.14
  6. Step 6: Final answer
    x = 42,870.63

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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.