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Finding the Fourth Proportional to 66,566, 99,849 and 17,318

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Solution

The fourth proportional to 66,566, 99,849 and 17,318 is: 25,977

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,566 : 99,849 = 17,318 : x
  2. Step 2: Convert to fraction form
    66,566/99,849 = 17,318/x
  3. Step 3: Cross multiply
    66,566x = 99,849 × 17,318
  4. Step 4: Simplify right side
    66,566x = 1,729,184,982
  5. Step 5: Solve for x
    x = 1,729,184,982/66,566
  6. Step 6: Final answer
    x = 25,977

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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.