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Finding the Fourth Proportional to 48,481.89, 72,720.72 and 15,201.21

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Solution

The fourth proportional to 48,481.89, 72,720.72 and 15,201.21 is: 22,801.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,481.89 : 72,720.72 = 15,201.21 : x
  2. Step 2: Convert to fraction form
    48,481.89/72,720.72 = 15,201.21/x
  3. Step 3: Cross multiply
    48,481.89x = 72,720.72 × 15,201.21
  4. Step 4: Simplify right side
    48,481.89x = 1,105,442,936.07
  5. Step 5: Solve for x
    x = 1,105,442,936.07/48,481.89
  6. Step 6: Final answer
    x = 22,801.15

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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.