Home / 87,450-131,202.66-31,288.86

Finding the Fourth Proportional to 87,450, 131,202.66 and 31,288.86

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Solution

The fourth proportional to 87,450, 131,202.66 and 31,288.86 is: 46,943.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,450 : 131,202.66 = 31,288.86 : x
  2. Step 2: Convert to fraction form
    87,450/131,202.66 = 31,288.86/x
  3. Step 3: Cross multiply
    87,450x = 131,202.66 × 31,288.86
  4. Step 4: Simplify right side
    87,450x = 4,105,181,660.37
  5. Step 5: Solve for x
    x = 4,105,181,660.37/87,450
  6. Step 6: Final answer
    x = 46,943.19

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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.