Home / 87,942.70-131,912.86-21,382.64

Finding the Fourth Proportional to 87,942.70, 131,912.86 and 21,382.64

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Solution

The fourth proportional to 87,942.70, 131,912.86 and 21,382.64 is: 32,073.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,942.70 : 131,912.86 = 21,382.64 : x
  2. Step 2: Convert to fraction form
    87,942.70/131,912.86 = 21,382.64/x
  3. Step 3: Cross multiply
    87,942.70x = 131,912.86 × 21,382.64
  4. Step 4: Simplify right side
    87,942.70x = 2,820,645,196.75
  5. Step 5: Solve for x
    x = 2,820,645,196.75/87,942.70
  6. Step 6: Final answer
    x = 32,073.67

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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.