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Finding the Fourth Proportional to 79,284.34, 118,926.24 and 20,119.78

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Solution

The fourth proportional to 79,284.34, 118,926.24 and 20,119.78 is: 30,179.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,284.34 : 118,926.24 = 20,119.78 : x
  2. Step 2: Convert to fraction form
    79,284.34/118,926.24 = 20,119.78/x
  3. Step 3: Cross multiply
    79,284.34x = 118,926.24 × 20,119.78
  4. Step 4: Simplify right side
    79,284.34x = 2,392,769,785.03
  5. Step 5: Solve for x
    x = 2,392,769,785.03/79,284.34
  6. Step 6: Final answer
    x = 30,179.60

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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.