Home / 80,443.12-120,704.88-36,101.56

Finding the Fourth Proportional to 80,443.12, 120,704.88 and 36,101.56

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Solution

The fourth proportional to 80,443.12, 120,704.88 and 36,101.56 is: 54,170.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,443.12 : 120,704.88 = 36,101.56 : x
  2. Step 2: Convert to fraction form
    80,443.12/120,704.88 = 36,101.56/x
  3. Step 3: Cross multiply
    80,443.12x = 120,704.88 × 36,101.56
  4. Step 4: Simplify right side
    80,443.12x = 4,357,634,467.61
  5. Step 5: Solve for x
    x = 4,357,634,467.61/80,443.12
  6. Step 6: Final answer
    x = 54,170.38

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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.