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Finding the Fourth Proportional to 79,266.28, 118,899.17 and 20,101.81

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Solution

The fourth proportional to 79,266.28, 118,899.17 and 20,101.81 is: 30,152.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,266.28 : 118,899.17 = 20,101.81 : x
  2. Step 2: Convert to fraction form
    79,266.28/118,899.17 = 20,101.81/x
  3. Step 3: Cross multiply
    79,266.28x = 118,899.17 × 20,101.81
  4. Step 4: Simplify right side
    79,266.28x = 2,390,088,524.50
  5. Step 5: Solve for x
    x = 2,390,088,524.50/79,266.28
  6. Step 6: Final answer
    x = 30,152.65

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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.