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Finding the Fourth Proportional to 66,791.92, 100,164.84 and 19,394.18

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Solution

The fourth proportional to 66,791.92, 100,164.84 and 19,394.18 is: 29,084.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,791.92 : 100,164.84 = 19,394.18 : x
  2. Step 2: Convert to fraction form
    66,791.92/100,164.84 = 19,394.18/x
  3. Step 3: Cross multiply
    66,791.92x = 100,164.84 × 19,394.18
  4. Step 4: Simplify right side
    66,791.92x = 1,942,614,936.63
  5. Step 5: Solve for x
    x = 1,942,614,936.63/66,791.92
  6. Step 6: Final answer
    x = 29,084.58

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1.5x scale

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.