Home / 87,836.78-131,448.99-71,857.10

Finding the Fourth Proportional to 87,836.78, 131,448.99 and 71,857.10

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Solution

The fourth proportional to 87,836.78, 131,448.99 and 71,857.10 is: 107,535.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,836.78 : 131,448.99 = 71,857.10 : x
  2. Step 2: Convert to fraction form
    87,836.78/131,448.99 = 71,857.10/x
  3. Step 3: Cross multiply
    87,836.78x = 131,448.99 × 71,857.10
  4. Step 4: Simplify right side
    87,836.78x = 9,445,543,219.33
  5. Step 5: Solve for x
    x = 9,445,543,219.33/87,836.78
  6. Step 6: Final answer
    x = 107,535.17

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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.