Home / 87,622.40-131,203.20-64,121.60

Finding the Fourth Proportional to 87,622.40, 131,203.20 and 64,121.60

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Solution

The fourth proportional to 87,622.40, 131,203.20 and 64,121.60 is: 96,013.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,622.40 : 131,203.20 = 64,121.60 : x
  2. Step 2: Convert to fraction form
    87,622.40/131,203.20 = 64,121.60/x
  3. Step 3: Cross multiply
    87,622.40x = 131,203.20 × 64,121.60
  4. Step 4: Simplify right side
    87,622.40x = 8,412,959,109.12
  5. Step 5: Solve for x
    x = 8,412,959,109.12/87,622.40
  6. Step 6: Final answer
    x = 96,013.79

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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.