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Finding the Fourth Proportional to 71,795.43, 99,081.63 and 39,963.65

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Solution

The fourth proportional to 71,795.43, 99,081.63 and 39,963.65 is: 55,152.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,795.43 : 99,081.63 = 39,963.65 : x
  2. Step 2: Convert to fraction form
    71,795.43/99,081.63 = 39,963.65/x
  3. Step 3: Cross multiply
    71,795.43x = 99,081.63 × 39,963.65
  4. Step 4: Simplify right side
    71,795.43x = 3,959,663,087.34
  5. Step 5: Solve for x
    x = 3,959,663,087.34/71,795.43
  6. Step 6: Final answer
    x = 55,152.02

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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.