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Finding the Fourth Proportional to 49,800, 74,712.80 and 16,968

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Solution

The fourth proportional to 49,800, 74,712.80 and 16,968 is: 25,456.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,800 : 74,712.80 = 16,968 : x
  2. Step 2: Convert to fraction form
    49,800/74,712.80 = 16,968/x
  3. Step 3: Cross multiply
    49,800x = 74,712.80 × 16,968
  4. Step 4: Simplify right side
    49,800x = 1,267,726,790.40
  5. Step 5: Solve for x
    x = 1,267,726,790.40/49,800
  6. Step 6: Final answer
    x = 25,456.36

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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.