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Finding the Fourth Proportional to 66,879, 100,364.58 and 23,103

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Solution

The fourth proportional to 66,879, 100,364.58 and 23,103 is: 34,670.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,879 : 100,364.58 = 23,103 : x
  2. Step 2: Convert to fraction form
    66,879/100,364.58 = 23,103/x
  3. Step 3: Cross multiply
    66,879x = 100,364.58 × 23,103
  4. Step 4: Simplify right side
    66,879x = 2,318,722,891.74
  5. Step 5: Solve for x
    x = 2,318,722,891.74/66,879
  6. Step 6: Final answer
    x = 34,670.42

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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.