Home / 80,404.22-120,589.40-51,855.66

Finding the Fourth Proportional to 80,404.22, 120,589.40 and 51,855.66

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Solution

The fourth proportional to 80,404.22, 120,589.40 and 51,855.66 is: 77,772.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,404.22 : 120,589.40 = 51,855.66 : x
  2. Step 2: Convert to fraction form
    80,404.22/120,589.40 = 51,855.66/x
  3. Step 3: Cross multiply
    80,404.22x = 120,589.40 × 51,855.66
  4. Step 4: Simplify right side
    80,404.22x = 6,253,243,055.64
  5. Step 5: Solve for x
    x = 6,253,243,055.64/80,404.22
  6. Step 6: Final answer
    x = 77,772.57

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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.