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Finding the Fourth Proportional to 66,879.51, 100,318.26 and 16,279.02

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Solution

The fourth proportional to 66,879.51, 100,318.26 and 16,279.02 is: 24,418.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,879.51 : 100,318.26 = 16,279.02 : x
  2. Step 2: Convert to fraction form
    66,879.51/100,318.26 = 16,279.02/x
  3. Step 3: Cross multiply
    66,879.51x = 100,318.26 × 16,279.02
  4. Step 4: Simplify right side
    66,879.51x = 1,633,082,960.91
  5. Step 5: Solve for x
    x = 1,633,082,960.91/66,879.51
  6. Step 6: Final answer
    x = 24,418.29

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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.