Home / 87,711.87-131,609.93-68,874.51

Finding the Fourth Proportional to 87,711.87, 131,609.93 and 68,874.51

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Solution

The fourth proportional to 87,711.87, 131,609.93 and 68,874.51 is: 103,344.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,711.87 : 131,609.93 = 68,874.51 : x
  2. Step 2: Convert to fraction form
    87,711.87/131,609.93 = 68,874.51/x
  3. Step 3: Cross multiply
    87,711.87x = 131,609.93 × 68,874.51
  4. Step 4: Simplify right side
    87,711.87x = 9,064,569,095.51
  5. Step 5: Solve for x
    x = 9,064,569,095.51/87,711.87
  6. Step 6: Final answer
    x = 103,344.84

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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.