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Finding the Fourth Proportional to 79,974.70, 119,710.48 and 54,867.94

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Solution

The fourth proportional to 79,974.70, 119,710.48 and 54,867.94 is: 82,129.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,974.70 : 119,710.48 = 54,867.94 : x
  2. Step 2: Convert to fraction form
    79,974.70/119,710.48 = 54,867.94/x
  3. Step 3: Cross multiply
    79,974.70x = 119,710.48 × 54,867.94
  4. Step 4: Simplify right side
    79,974.70x = 6,568,267,434.01
  5. Step 5: Solve for x
    x = 6,568,267,434.01/79,974.70
  6. Step 6: Final answer
    x = 82,129.32

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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.