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Finding the Fourth Proportional to 79,360.56, 119,042.64 and 20,196

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Solution

The fourth proportional to 79,360.56, 119,042.64 and 20,196 is: 30,294.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,360.56 : 119,042.64 = 20,196 : x
  2. Step 2: Convert to fraction form
    79,360.56/119,042.64 = 20,196/x
  3. Step 3: Cross multiply
    79,360.56x = 119,042.64 × 20,196
  4. Step 4: Simplify right side
    79,360.56x = 2,404,185,157.44
  5. Step 5: Solve for x
    x = 2,404,185,157.44/79,360.56
  6. Step 6: Final answer
    x = 30,294.46

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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.