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Finding the Fourth Proportional to 79,251.71, 118,877.72 and 20,087.33

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Solution

The fourth proportional to 79,251.71, 118,877.72 and 20,087.33 is: 30,131.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,251.71 : 118,877.72 = 20,087.33 : x
  2. Step 2: Convert to fraction form
    79,251.71/118,877.72 = 20,087.33/x
  3. Step 3: Cross multiply
    79,251.71x = 118,877.72 × 20,087.33
  4. Step 4: Simplify right side
    79,251.71x = 2,387,935,296.46
  5. Step 5: Solve for x
    x = 2,387,935,296.46/79,251.71
  6. Step 6: Final answer
    x = 30,131.03

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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.