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Finding the Fourth Proportional to 49,909, 74,847.36 and 16,620.16

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Solution

The fourth proportional to 49,909, 74,847.36 and 16,620.16 is: 24,924.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,909 : 74,847.36 = 16,620.16 : x
  2. Step 2: Convert to fraction form
    49,909/74,847.36 = 16,620.16/x
  3. Step 3: Cross multiply
    49,909x = 74,847.36 × 16,620.16
  4. Step 4: Simplify right side
    49,909x = 1,243,975,098.78
  5. Step 5: Solve for x
    x = 1,243,975,098.78/49,909
  6. Step 6: Final answer
    x = 24,924.87

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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.