Home / 87,687.77-131,517.07-31,516.49

Finding the Fourth Proportional to 87,687.77, 131,517.07 and 31,516.49

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Solution

The fourth proportional to 87,687.77, 131,517.07 and 31,516.49 is: 47,269.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,687.77 : 131,517.07 = 31,516.49 : x
  2. Step 2: Convert to fraction form
    87,687.77/131,517.07 = 31,516.49/x
  3. Step 3: Cross multiply
    87,687.77x = 131,517.07 × 31,516.49
  4. Step 4: Simplify right side
    87,687.77x = 4,144,956,671.49
  5. Step 5: Solve for x
    x = 4,144,956,671.49/87,687.77
  6. Step 6: Final answer
    x = 47,269.50

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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.