Home / 80,511.12-120,767.07-47,207.82

Finding the Fourth Proportional to 80,511.12, 120,767.07 and 47,207.82

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Solution

The fourth proportional to 80,511.12, 120,767.07 and 47,207.82 is: 70,811.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,511.12 : 120,767.07 = 47,207.82 : x
  2. Step 2: Convert to fraction form
    80,511.12/120,767.07 = 47,207.82/x
  3. Step 3: Cross multiply
    80,511.12x = 120,767.07 × 47,207.82
  4. Step 4: Simplify right side
    80,511.12x = 5,701,150,102.49
  5. Step 5: Solve for x
    x = 5,701,150,102.49/80,511.12
  6. Step 6: Final answer
    x = 70,811.96

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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.