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Finding the Fourth Proportional to 79,841, 119,761.02 and 20,676.52

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Solution

The fourth proportional to 79,841, 119,761.02 and 20,676.52 is: 31,014.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,841 : 119,761.02 = 20,676.52 : x
  2. Step 2: Convert to fraction form
    79,841/119,761.02 = 20,676.52/x
  3. Step 3: Cross multiply
    79,841x = 119,761.02 × 20,676.52
  4. Step 4: Simplify right side
    79,841x = 2,476,241,125.25
  5. Step 5: Solve for x
    x = 2,476,241,125.25/79,841
  6. Step 6: Final answer
    x = 31,014.66

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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.