Home / 39,755.48-54,862.11-21,850.02

Finding the Fourth Proportional to 39,755.48, 54,862.11 and 21,850.02

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Solution

The fourth proportional to 39,755.48, 54,862.11 and 21,850.02 is: 30,152.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,755.48 : 54,862.11 = 21,850.02 : x
  2. Step 2: Convert to fraction form
    39,755.48/54,862.11 = 21,850.02/x
  3. Step 3: Cross multiply
    39,755.48x = 54,862.11 × 21,850.02
  4. Step 4: Simplify right side
    39,755.48x = 1,198,738,200.74
  5. Step 5: Solve for x
    x = 1,198,738,200.74/39,755.48
  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.