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Finding the Fourth Proportional to 66,821.27, 100,231.90 and 62,392.59

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Solution

The fourth proportional to 66,821.27, 100,231.90 and 62,392.59 is: 93,588.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,821.27 : 100,231.90 = 62,392.59 : x
  2. Step 2: Convert to fraction form
    66,821.27/100,231.90 = 62,392.59/x
  3. Step 3: Cross multiply
    66,821.27x = 100,231.90 × 62,392.59
  4. Step 4: Simplify right side
    66,821.27x = 6,253,727,685.64
  5. Step 5: Solve for x
    x = 6,253,727,685.64/66,821.27
  6. Step 6: Final answer
    x = 93,588.89

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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.