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Finding the Fourth Proportional to 119,523.72, 179,249.94 and 40,620

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Solution

The fourth proportional to 119,523.72, 179,249.94 and 40,620 is: 60,917.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,523.72 : 179,249.94 = 40,620 : x
  2. Step 2: Convert to fraction form
    119,523.72/179,249.94 = 40,620/x
  3. Step 3: Cross multiply
    119,523.72x = 179,249.94 × 40,620
  4. Step 4: Simplify right side
    119,523.72x = 7,281,132,562.80
  5. Step 5: Solve for x
    x = 7,281,132,562.80/119,523.72
  6. Step 6: Final answer
    x = 60,917.89

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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.