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Finding the Fourth Proportional to 39,988, 55,183.44 and 22,324

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Solution

The fourth proportional to 39,988, 55,183.44 and 22,324 is: 30,807.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,988 : 55,183.44 = 22,324 : x
  2. Step 2: Convert to fraction form
    39,988/55,183.44 = 22,324/x
  3. Step 3: Cross multiply
    39,988x = 55,183.44 × 22,324
  4. Step 4: Simplify right side
    39,988x = 1,231,915,114.56
  5. Step 5: Solve for x
    x = 1,231,915,114.56/39,988
  6. Step 6: Final answer
    x = 30,807.12

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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.