Home / 87,786.40-131,506.80-52,621.60

Finding the Fourth Proportional to 87,786.40, 131,506.80 and 52,621.60

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Solution

The fourth proportional to 87,786.40, 131,506.80 and 52,621.60 is: 78,828.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,786.40 : 131,506.80 = 52,621.60 : x
  2. Step 2: Convert to fraction form
    87,786.40/131,506.80 = 52,621.60/x
  3. Step 3: Cross multiply
    87,786.40x = 131,506.80 × 52,621.60
  4. Step 4: Simplify right side
    87,786.40x = 6,920,098,226.88
  5. Step 5: Solve for x
    x = 6,920,098,226.88/87,786.40
  6. Step 6: Final answer
    x = 78,828.82

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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.