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Finding the Fourth Proportional to 80,486.52, 111,066 and 48,672.96

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Solution

The fourth proportional to 80,486.52, 111,066 and 48,672.96 is: 67,165.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,486.52 : 111,066 = 48,672.96 : x
  2. Step 2: Convert to fraction form
    80,486.52/111,066 = 48,672.96/x
  3. Step 3: Cross multiply
    80,486.52x = 111,066 × 48,672.96
  4. Step 4: Simplify right side
    80,486.52x = 5,405,910,975.36
  5. Step 5: Solve for x
    x = 5,405,910,975.36/80,486.52
  6. Step 6: Final answer
    x = 67,165.42

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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.