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Finding the Fourth Proportional to 66,662.61, 100,021.71 and 29,249.57

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Solution

The fourth proportional to 66,662.61, 100,021.71 and 29,249.57 is: 43,886.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,662.61 : 100,021.71 = 29,249.57 : x
  2. Step 2: Convert to fraction form
    66,662.61/100,021.71 = 29,249.57/x
  3. Step 3: Cross multiply
    66,662.61x = 100,021.71 × 29,249.57
  4. Step 4: Simplify right side
    66,662.61x = 2,925,591,508.06
  5. Step 5: Solve for x
    x = 2,925,591,508.06/66,662.61
  6. Step 6: Final answer
    x = 43,886.54

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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.