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Finding the Fourth Proportional to 79,081.11, 118,609.11 and 36,990.41

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Solution

The fourth proportional to 79,081.11, 118,609.11 and 36,990.41 is: 55,479.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,081.11 : 118,609.11 = 36,990.41 : x
  2. Step 2: Convert to fraction form
    79,081.11/118,609.11 = 36,990.41/x
  3. Step 3: Cross multiply
    79,081.11x = 118,609.11 × 36,990.41
  4. Step 4: Simplify right side
    79,081.11x = 4,387,399,015.59
  5. Step 5: Solve for x
    x = 4,387,399,015.59/79,081.11
  6. Step 6: Final answer
    x = 55,479.73

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1.5x scale

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.