Home / 87,143.06-130,714.13-47,414.60

Finding the Fourth Proportional to 87,143.06, 130,714.13 and 47,414.60

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Solution

The fourth proportional to 87,143.06, 130,714.13 and 47,414.60 is: 71,121.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,143.06 : 130,714.13 = 47,414.60 : x
  2. Step 2: Convert to fraction form
    87,143.06/130,714.13 = 47,414.60/x
  3. Step 3: Cross multiply
    87,143.06x = 130,714.13 × 47,414.60
  4. Step 4: Simplify right side
    87,143.06x = 6,197,757,297.65
  5. Step 5: Solve for x
    x = 6,197,757,297.65/87,143.06
  6. Step 6: Final answer
    x = 71,121.64

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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.