Home / 87,421.34-131,099.82-31,246.26

Finding the Fourth Proportional to 87,421.34, 131,099.82 and 31,246.26

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Solution

The fourth proportional to 87,421.34, 131,099.82 and 31,246.26 is: 46,857.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,421.34 : 131,099.82 = 31,246.26 : x
  2. Step 2: Convert to fraction form
    87,421.34/131,099.82 = 31,246.26/x
  3. Step 3: Cross multiply
    87,421.34x = 131,099.82 × 31,246.26
  4. Step 4: Simplify right side
    87,421.34x = 4,096,379,061.67
  5. Step 5: Solve for x
    x = 4,096,379,061.67/87,421.34
  6. Step 6: Final answer
    x = 46,857.88

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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.