Home / 87,481.12-131,189.41-31,306

Finding the Fourth Proportional to 87,481.12, 131,189.41 and 31,306

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Solution

The fourth proportional to 87,481.12, 131,189.41 and 31,306 is: 46,947.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,481.12 : 131,189.41 = 31,306 : x
  2. Step 2: Convert to fraction form
    87,481.12/131,189.41 = 31,306/x
  3. Step 3: Cross multiply
    87,481.12x = 131,189.41 × 31,306
  4. Step 4: Simplify right side
    87,481.12x = 4,107,015,669.46
  5. Step 5: Solve for x
    x = 4,107,015,669.46/87,481.12
  6. Step 6: Final answer
    x = 46,947.45

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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.