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Finding the Fourth Proportional to 79,863.73, 119,795.48 and 20,699.46

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Solution

The fourth proportional to 79,863.73, 119,795.48 and 20,699.46 is: 31,049.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,863.73 : 119,795.48 = 20,699.46 : x
  2. Step 2: Convert to fraction form
    79,863.73/119,795.48 = 20,699.46/x
  3. Step 3: Cross multiply
    79,863.73x = 119,795.48 × 20,699.46
  4. Step 4: Simplify right side
    79,863.73x = 2,479,701,837.00
  5. Step 5: Solve for x
    x = 2,479,701,837.00/79,863.73
  6. Step 6: Final answer
    x = 31,049.16

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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.