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Finding the Fourth Proportional to 79,173.29, 118,760.70 and 20,008.96

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Solution

The fourth proportional to 79,173.29, 118,760.70 and 20,008.96 is: 30,013.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,173.29 : 118,760.70 = 20,008.96 : x
  2. Step 2: Convert to fraction form
    79,173.29/118,760.70 = 20,008.96/x
  3. Step 3: Cross multiply
    79,173.29x = 118,760.70 × 20,008.96
  4. Step 4: Simplify right side
    79,173.29x = 2,376,278,095.87
  5. Step 5: Solve for x
    x = 2,376,278,095.87/79,173.29
  6. Step 6: Final answer
    x = 30,013.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.