Home / 87,710-131,571.52-28,541.12

Finding the Fourth Proportional to 87,710, 131,571.52 and 28,541.12

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Solution

The fourth proportional to 87,710, 131,571.52 and 28,541.12 is: 42,813.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,710 : 131,571.52 = 28,541.12 : x
  2. Step 2: Convert to fraction form
    87,710/131,571.52 = 28,541.12/x
  3. Step 3: Cross multiply
    87,710x = 131,571.52 × 28,541.12
  4. Step 4: Simplify right side
    87,710x = 3,755,198,540.90
  5. Step 5: Solve for x
    x = 3,755,198,540.90/87,710
  6. Step 6: Final answer
    x = 42,813.80

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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.