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Finding the Fourth Proportional to 66,231.42, 99,337.41 and 21,859.62

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Solution

The fourth proportional to 66,231.42, 99,337.41 and 21,859.62 is: 32,786.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,231.42 : 99,337.41 = 21,859.62 : x
  2. Step 2: Convert to fraction form
    66,231.42/99,337.41 = 21,859.62/x
  3. Step 3: Cross multiply
    66,231.42x = 99,337.41 × 21,859.62
  4. Step 4: Simplify right side
    66,231.42x = 2,171,478,034.38
  5. Step 5: Solve for x
    x = 2,171,478,034.38/66,231.42
  6. Step 6: Final answer
    x = 32,786.22

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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.