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Finding the Fourth Proportional to 71,806.62, 99,078.66 and 43,495.86

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Solution

The fourth proportional to 71,806.62, 99,078.66 and 43,495.86 is: 60,015.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,806.62 : 99,078.66 = 43,495.86 : x
  2. Step 2: Convert to fraction form
    71,806.62/99,078.66 = 43,495.86/x
  3. Step 3: Cross multiply
    71,806.62x = 99,078.66 × 43,495.86
  4. Step 4: Simplify right side
    71,806.62x = 4,309,511,524.35
  5. Step 5: Solve for x
    x = 4,309,511,524.35/71,806.62
  6. Step 6: Final answer
    x = 60,015.52

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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.