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Finding the Fourth Proportional to 80,563.89, 120,845.88 and 30,632.46

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Solution

The fourth proportional to 80,563.89, 120,845.88 and 30,632.46 is: 45,948.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,563.89 : 120,845.88 = 30,632.46 : x
  2. Step 2: Convert to fraction form
    80,563.89/120,845.88 = 30,632.46/x
  3. Step 3: Cross multiply
    80,563.89x = 120,845.88 × 30,632.46
  4. Step 4: Simplify right side
    80,563.89x = 3,701,806,585.26
  5. Step 5: Solve for x
    x = 3,701,806,585.26/80,563.89
  6. Step 6: Final answer
    x = 45,948.71

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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.