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Finding the Fourth Proportional to 72,992.52, 100,729.68 and 41,161.38

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Solution

The fourth proportional to 72,992.52, 100,729.68 and 41,161.38 is: 56,802.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,992.52 : 100,729.68 = 41,161.38 : x
  2. Step 2: Convert to fraction form
    72,992.52/100,729.68 = 41,161.38/x
  3. Step 3: Cross multiply
    72,992.52x = 100,729.68 × 41,161.38
  4. Step 4: Simplify right side
    72,992.52x = 4,146,172,635.76
  5. Step 5: Solve for x
    x = 4,146,172,635.76/72,992.52
  6. Step 6: Final answer
    x = 56,802.71

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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.