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Finding the Fourth Proportional to 49,198.80, 73,807.80 and 21,118.80

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Solution

The fourth proportional to 49,198.80, 73,807.80 and 21,118.80 is: 31,682.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,198.80 : 73,807.80 = 21,118.80 : x
  2. Step 2: Convert to fraction form
    49,198.80/73,807.80 = 21,118.80/x
  3. Step 3: Cross multiply
    49,198.80x = 73,807.80 × 21,118.80
  4. Step 4: Simplify right side
    49,198.80x = 1,558,732,166.64
  5. Step 5: Solve for x
    x = 1,558,732,166.64/49,198.80
  6. Step 6: Final answer
    x = 31,682.32

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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.