Home / 39,906.45-55,070.61-21,757.11

Finding the Fourth Proportional to 39,906.45, 55,070.61 and 21,757.11

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Solution

The fourth proportional to 39,906.45, 55,070.61 and 21,757.11 is: 30,024.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,906.45 : 55,070.61 = 21,757.11 : x
  2. Step 2: Convert to fraction form
    39,906.45/55,070.61 = 21,757.11/x
  3. Step 3: Cross multiply
    39,906.45x = 55,070.61 × 21,757.11
  4. Step 4: Simplify right side
    39,906.45x = 1,198,177,319.54
  5. Step 5: Solve for x
    x = 1,198,177,319.54/39,906.45
  6. Step 6: Final answer
    x = 30,024.65

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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.