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Finding the Fourth Proportional to 79,694.69, 109,940.79 and 49,470.35

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Solution

The fourth proportional to 79,694.69, 109,940.79 and 49,470.35 is: 68,245.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,694.69 : 109,940.79 = 49,470.35 : x
  2. Step 2: Convert to fraction form
    79,694.69/109,940.79 = 49,470.35/x
  3. Step 3: Cross multiply
    79,694.69x = 109,940.79 × 49,470.35
  4. Step 4: Simplify right side
    79,694.69x = 5,438,808,996.39
  5. Step 5: Solve for x
    x = 5,438,808,996.39/79,694.69
  6. Step 6: Final answer
    x = 68,245.57

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1.5x scale

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.