Home / 87,691.40-131,450.70-43,281.80

Finding the Fourth Proportional to 87,691.40, 131,450.70 and 43,281.80

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Solution

The fourth proportional to 87,691.40, 131,450.70 and 43,281.80 is: 64,880.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,691.40 : 131,450.70 = 43,281.80 : x
  2. Step 2: Convert to fraction form
    87,691.40/131,450.70 = 43,281.80/x
  3. Step 3: Cross multiply
    87,691.40x = 131,450.70 × 43,281.80
  4. Step 4: Simplify right side
    87,691.40x = 5,689,422,907.26
  5. Step 5: Solve for x
    x = 5,689,422,907.26/87,691.40
  6. Step 6: Final answer
    x = 64,880.06

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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.