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Finding the Fourth Proportional to 66,809.67, 100,222.73 and 21,829.96

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Solution

The fourth proportional to 66,809.67, 100,222.73 and 21,829.96 is: 32,747.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,809.67 : 100,222.73 = 21,829.96 : x
  2. Step 2: Convert to fraction form
    66,809.67/100,222.73 = 21,829.96/x
  3. Step 3: Cross multiply
    66,809.67x = 100,222.73 × 21,829.96
  4. Step 4: Simplify right side
    66,809.67x = 2,187,858,186.99
  5. Step 5: Solve for x
    x = 2,187,858,186.99/66,809.67
  6. Step 6: Final answer
    x = 32,747.63

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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.