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Finding the Fourth Proportional to 49,920.48, 68,902.02 and 28,711.98

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Solution

The fourth proportional to 49,920.48, 68,902.02 and 28,711.98 is: 39,629.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,920.48 : 68,902.02 = 28,711.98 : x
  2. Step 2: Convert to fraction form
    49,920.48/68,902.02 = 28,711.98/x
  3. Step 3: Cross multiply
    49,920.48x = 68,902.02 × 28,711.98
  4. Step 4: Simplify right side
    49,920.48x = 1,978,313,420.20
  5. Step 5: Solve for x
    x = 1,978,313,420.20/49,920.48
  6. Step 6: Final answer
    x = 39,629.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.