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Finding the Fourth Proportional to 79,813.62, 119,982.87 and 74,039.94

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Solution

The fourth proportional to 79,813.62, 119,982.87 and 74,039.94 is: 111,303.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,813.62 : 119,982.87 = 74,039.94 : x
  2. Step 2: Convert to fraction form
    79,813.62/119,982.87 = 74,039.94/x
  3. Step 3: Cross multiply
    79,813.62x = 119,982.87 × 74,039.94
  4. Step 4: Simplify right side
    79,813.62x = 8,883,524,495.83
  5. Step 5: Solve for x
    x = 8,883,524,495.83/79,813.62
  6. Step 6: Final answer
    x = 111,303.37

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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.