Home / 80,029.18-120,043.86-20,864.80

Finding the Fourth Proportional to 80,029.18, 120,043.86 and 20,864.80

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Solution

The fourth proportional to 80,029.18, 120,043.86 and 20,864.80 is: 31,297.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,029.18 : 120,043.86 = 20,864.80 : x
  2. Step 2: Convert to fraction form
    80,029.18/120,043.86 = 20,864.80/x
  3. Step 3: Cross multiply
    80,029.18x = 120,043.86 × 20,864.80
  4. Step 4: Simplify right side
    80,029.18x = 2,504,691,130.13
  5. Step 5: Solve for x
    x = 2,504,691,130.13/80,029.18
  6. Step 6: Final answer
    x = 31,297.22

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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.