Home / 87,876.18-131,787-31,709.01

Finding the Fourth Proportional to 87,876.18, 131,787 and 31,709.01

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Solution

The fourth proportional to 87,876.18, 131,787 and 31,709.01 is: 47,553.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,876.18 : 131,787 = 31,709.01 : x
  2. Step 2: Convert to fraction form
    87,876.18/131,787 = 31,709.01/x
  3. Step 3: Cross multiply
    87,876.18x = 131,787 × 31,709.01
  4. Step 4: Simplify right side
    87,876.18x = 4,178,835,300.87
  5. Step 5: Solve for x
    x = 4,178,835,300.87/87,876.18
  6. Step 6: Final answer
    x = 47,553.67

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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.