Home / 80,120,305.81-120,317,992.49-49,177,661.32

Finding the Fourth Proportional to 80,120,305.81, 120,317,992.49 and 49,177,661.32

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Solution

The fourth proportional to 80,120,305.81, 120,317,992.49 and 49,177,661.32 is: 73,850,909.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,120,305.81 : 120,317,992.49 = 49,177,661.32 : x
  2. Step 2: Convert to fraction form
    80,120,305.81/120,317,992.49 = 49,177,661.32/x
  3. Step 3: Cross multiply
    80,120,305.81x = 120,317,992.49 × 49,177,661.32
  4. Step 4: Simplify right side
    80,120,305.81x = 5,916,957,485,375,523
  5. Step 5: Solve for x
    x = 5,916,957,485,375,523/80,120,305.81
  6. Step 6: Final answer
    x = 73,850,909.90

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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.