Home / 72,571.23-108,863.75-28,201.42

Finding the Fourth Proportional to 72,571.23, 108,863.75 and 28,201.42

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Solution

The fourth proportional to 72,571.23, 108,863.75 and 28,201.42 is: 42,304.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,571.23 : 108,863.75 = 28,201.42 : x
  2. Step 2: Convert to fraction form
    72,571.23/108,863.75 = 28,201.42/x
  3. Step 3: Cross multiply
    72,571.23x = 108,863.75 × 28,201.42
  4. Step 4: Simplify right side
    72,571.23x = 3,070,112,336.53
  5. Step 5: Solve for x
    x = 3,070,112,336.53/72,571.23
  6. Step 6: Final answer
    x = 42,304.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.