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Finding the Fourth Proportional to 66,836.35, 100,222.53 and 22,450.78

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Solution

The fourth proportional to 66,836.35, 100,222.53 and 22,450.78 is: 33,665.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,836.35 : 100,222.53 = 22,450.78 : x
  2. Step 2: Convert to fraction form
    66,836.35/100,222.53 = 22,450.78/x
  3. Step 3: Cross multiply
    66,836.35x = 100,222.53 × 22,450.78
  4. Step 4: Simplify right side
    66,836.35x = 2,250,073,972.07
  5. Step 5: Solve for x
    x = 2,250,073,972.07/66,836.35
  6. Step 6: Final answer
    x = 33,665.42

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1.5x scale

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.