Home / 80,174.75-120,226.57-42,727.84

Finding the Fourth Proportional to 80,174.75, 120,226.57 and 42,727.84

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Solution

The fourth proportional to 80,174.75, 120,226.57 and 42,727.84 is: 64,072.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,174.75 : 120,226.57 = 42,727.84 : x
  2. Step 2: Convert to fraction form
    80,174.75/120,226.57 = 42,727.84/x
  3. Step 3: Cross multiply
    80,174.75x = 120,226.57 × 42,727.84
  4. Step 4: Simplify right side
    80,174.75x = 5,137,021,646.71
  5. Step 5: Solve for x
    x = 5,137,021,646.71/80,174.75
  6. Step 6: Final answer
    x = 64,072.81

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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.