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Finding the Fourth Proportional to 49,728, 74,592 and 16,896

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Solution

The fourth proportional to 49,728, 74,592 and 16,896 is: 25,344

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,728 : 74,592 = 16,896 : x
  2. Step 2: Convert to fraction form
    49,728/74,592 = 16,896/x
  3. Step 3: Cross multiply
    49,728x = 74,592 × 16,896
  4. Step 4: Simplify right side
    49,728x = 1,260,306,432
  5. Step 5: Solve for x
    x = 1,260,306,432/49,728
  6. Step 6: Final answer
    x = 25,344

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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.