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Finding the Fourth Proportional to 79,130.92, 118,696.38 and 31,767.64

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Solution

The fourth proportional to 79,130.92, 118,696.38 and 31,767.64 is: 47,651.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,130.92 : 118,696.38 = 31,767.64 : x
  2. Step 2: Convert to fraction form
    79,130.92/118,696.38 = 31,767.64/x
  3. Step 3: Cross multiply
    79,130.92x = 118,696.38 × 31,767.64
  4. Step 4: Simplify right side
    79,130.92x = 3,770,703,869.14
  5. Step 5: Solve for x
    x = 3,770,703,869.14/79,130.92
  6. Step 6: Final answer
    x = 47,651.46

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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.