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Finding the Fourth Proportional to 36,756, 50,724.09 and 19,989

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Solution

The fourth proportional to 36,756, 50,724.09 and 19,989 is: 27,585.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,756 : 50,724.09 = 19,989 : x
  2. Step 2: Convert to fraction form
    36,756/50,724.09 = 19,989/x
  3. Step 3: Cross multiply
    36,756x = 50,724.09 × 19,989
  4. Step 4: Simplify right side
    36,756x = 1,013,923,835.01
  5. Step 5: Solve for x
    x = 1,013,923,835.01/36,756
  6. Step 6: Final answer
    x = 27,585.26

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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.