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Finding the Fourth Proportional to 39,997.78, 55,201.80 and 23,230.78

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Solution

The fourth proportional to 39,997.78, 55,201.80 and 23,230.78 is: 32,061.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,997.78 : 55,201.80 = 23,230.78 : x
  2. Step 2: Convert to fraction form
    39,997.78/55,201.80 = 23,230.78/x
  3. Step 3: Cross multiply
    39,997.78x = 55,201.80 × 23,230.78
  4. Step 4: Simplify right side
    39,997.78x = 1,282,380,871.40
  5. Step 5: Solve for x
    x = 1,282,380,871.40/39,997.78
  6. Step 6: Final answer
    x = 32,061.30

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1.5x scale

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.