Home / 87,369.60-131,021.13-31,199.25

Finding the Fourth Proportional to 87,369.60, 131,021.13 and 31,199.25

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Solution

The fourth proportional to 87,369.60, 131,021.13 and 31,199.25 is: 46,786.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,369.60 : 131,021.13 = 31,199.25 : x
  2. Step 2: Convert to fraction form
    87,369.60/131,021.13 = 31,199.25/x
  3. Step 3: Cross multiply
    87,369.60x = 131,021.13 × 31,199.25
  4. Step 4: Simplify right side
    87,369.60x = 4,087,760,990.15
  5. Step 5: Solve for x
    x = 4,087,760,990.15/87,369.60
  6. Step 6: Final answer
    x = 46,786.99

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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.