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Finding the Fourth Proportional to 79,194.72, 118,795.80 and 20,031

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Solution

The fourth proportional to 79,194.72, 118,795.80 and 20,031 is: 30,047.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,194.72 : 118,795.80 = 20,031 : x
  2. Step 2: Convert to fraction form
    79,194.72/118,795.80 = 20,031/x
  3. Step 3: Cross multiply
    79,194.72x = 118,795.80 × 20,031
  4. Step 4: Simplify right side
    79,194.72x = 2,379,598,669.80
  5. Step 5: Solve for x
    x = 2,379,598,669.80/79,194.72
  6. Step 6: Final answer
    x = 30,047.44

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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.