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Finding the Fourth Proportional to 63,936, 95,904 and 20,160

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Solution

The fourth proportional to 63,936, 95,904 and 20,160 is: 30,240

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,936 : 95,904 = 20,160 : x
  2. Step 2: Convert to fraction form
    63,936/95,904 = 20,160/x
  3. Step 3: Cross multiply
    63,936x = 95,904 × 20,160
  4. Step 4: Simplify right side
    63,936x = 1,933,424,640
  5. Step 5: Solve for x
    x = 1,933,424,640/63,936
  6. Step 6: Final answer
    x = 30,240

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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.