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Finding the Fourth Proportional to 66,681, 100,022.46 and 17,433

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Solution

The fourth proportional to 66,681, 100,022.46 and 17,433 is: 26,149.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,681 : 100,022.46 = 17,433 : x
  2. Step 2: Convert to fraction form
    66,681/100,022.46 = 17,433/x
  3. Step 3: Cross multiply
    66,681x = 100,022.46 × 17,433
  4. Step 4: Simplify right side
    66,681x = 1,743,691,545.18
  5. Step 5: Solve for x
    x = 1,743,691,545.18/66,681
  6. Step 6: Final answer
    x = 26,149.75

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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.