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Finding the Fourth Proportional to 79,879.96, 119,732.46 and 40,382.74

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Solution

The fourth proportional to 79,879.96, 119,732.46 and 40,382.74 is: 60,529.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,879.96 : 119,732.46 = 40,382.74 : x
  2. Step 2: Convert to fraction form
    79,879.96/119,732.46 = 40,382.74/x
  3. Step 3: Cross multiply
    79,879.96x = 119,732.46 × 40,382.74
  4. Step 4: Simplify right side
    79,879.96x = 4,835,124,801.74
  5. Step 5: Solve for x
    x = 4,835,124,801.74/79,879.96
  6. Step 6: Final answer
    x = 60,529.89

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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.