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Finding the Fourth Proportional to 66,808.55, 100,227.17 and 19,424.46

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Solution

The fourth proportional to 66,808.55, 100,227.17 and 19,424.46 is: 29,140.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,808.55 : 100,227.17 = 19,424.46 : x
  2. Step 2: Convert to fraction form
    66,808.55/100,227.17 = 19,424.46/x
  3. Step 3: Cross multiply
    66,808.55x = 100,227.17 × 19,424.46
  4. Step 4: Simplify right side
    66,808.55x = 1,946,858,515.21
  5. Step 5: Solve for x
    x = 1,946,858,515.21/66,808.55
  6. Step 6: Final answer
    x = 29,140.86

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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.