Home / 87,991.53-131,997.54-31,858.07

Finding the Fourth Proportional to 87,991.53, 131,997.54 and 31,858.07

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Solution

The fourth proportional to 87,991.53, 131,997.54 and 31,858.07 is: 47,790.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,991.53 : 131,997.54 = 31,858.07 : x
  2. Step 2: Convert to fraction form
    87,991.53/131,997.54 = 31,858.07/x
  3. Step 3: Cross multiply
    87,991.53x = 131,997.54 × 31,858.07
  4. Step 4: Simplify right side
    87,991.53x = 4,205,186,869.15
  5. Step 5: Solve for x
    x = 4,205,186,869.15/87,991.53
  6. Step 6: Final answer
    x = 47,790.81

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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.