Home / 80,553.89-120,851.35-56,907.65

Finding the Fourth Proportional to 80,553.89, 120,851.35 and 56,907.65

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Solution

The fourth proportional to 80,553.89, 120,851.35 and 56,907.65 is: 85,375.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,553.89 : 120,851.35 = 56,907.65 : x
  2. Step 2: Convert to fraction form
    80,553.89/120,851.35 = 56,907.65/x
  3. Step 3: Cross multiply
    80,553.89x = 120,851.35 × 56,907.65
  4. Step 4: Simplify right side
    80,553.89x = 6,877,366,327.83
  5. Step 5: Solve for x
    x = 6,877,366,327.83/80,553.89
  6. Step 6: Final answer
    x = 85,375.97

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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.