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Finding the Fourth Proportional to 28,531.01, 42,780.31 and 23,879.99

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Solution

The fourth proportional to 28,531.01, 42,780.31 and 23,879.99 is: 35,806.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,531.01 : 42,780.31 = 23,879.99 : x
  2. Step 2: Convert to fraction form
    28,531.01/42,780.31 = 23,879.99/x
  3. Step 3: Cross multiply
    28,531.01x = 42,780.31 × 23,879.99
  4. Step 4: Simplify right side
    28,531.01x = 1,021,593,375.00
  5. Step 5: Solve for x
    x = 1,021,593,375.00/28,531.01
  6. Step 6: Final answer
    x = 35,806.42

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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.