Home / 39,770.46-54,883.61-21,865.60

Finding the Fourth Proportional to 39,770.46, 54,883.61 and 21,865.60

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Solution

The fourth proportional to 39,770.46, 54,883.61 and 21,865.60 is: 30,174.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,770.46 : 54,883.61 = 21,865.60 : x
  2. Step 2: Convert to fraction form
    39,770.46/54,883.61 = 21,865.60/x
  3. Step 3: Cross multiply
    39,770.46x = 54,883.61 × 21,865.60
  4. Step 4: Simplify right side
    39,770.46x = 1,200,062,816.28
  5. Step 5: Solve for x
    x = 1,200,062,816.28/39,770.46
  6. Step 6: Final answer
    x = 30,174.73

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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.