Home / 39,755.75-54,860.61-21,850.77

Finding the Fourth Proportional to 39,755.75, 54,860.61 and 21,850.77

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Solution

The fourth proportional to 39,755.75, 54,860.61 and 21,850.77 is: 30,152.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,755.75 : 54,860.61 = 21,850.77 : x
  2. Step 2: Convert to fraction form
    39,755.75/54,860.61 = 21,850.77/x
  3. Step 3: Cross multiply
    39,755.75x = 54,860.61 × 21,850.77
  4. Step 4: Simplify right side
    39,755.75x = 1,198,746,571.17
  5. Step 5: Solve for x
    x = 1,198,746,571.17/39,755.75
  6. Step 6: Final answer
    x = 30,152.78

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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.