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Finding the Fourth Proportional to 69,042.88, 95,338.96 and 65,500

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Solution

The fourth proportional to 69,042.88, 95,338.96 and 65,500 is: 90,446.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,042.88 : 95,338.96 = 65,500 : x
  2. Step 2: Convert to fraction form
    69,042.88/95,338.96 = 65,500/x
  3. Step 3: Cross multiply
    69,042.88x = 95,338.96 × 65,500
  4. Step 4: Simplify right side
    69,042.88x = 6,244,701,880
  5. Step 5: Solve for x
    x = 6,244,701,880/69,042.88
  6. Step 6: Final answer
    x = 90,446.72

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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.