Home / 87,834.78-131,445.99-71,855.10

Finding the Fourth Proportional to 87,834.78, 131,445.99 and 71,855.10

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Solution

The fourth proportional to 87,834.78, 131,445.99 and 71,855.10 is: 107,532.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,834.78 : 131,445.99 = 71,855.10 : x
  2. Step 2: Convert to fraction form
    87,834.78/131,445.99 = 71,855.10/x
  3. Step 3: Cross multiply
    87,834.78x = 131,445.99 × 71,855.10
  4. Step 4: Simplify right side
    87,834.78x = 9,445,064,756.05
  5. Step 5: Solve for x
    x = 9,445,064,756.05/87,834.78
  6. Step 6: Final answer
    x = 107,532.17

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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.