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Finding the Fourth Proportional to 66,805.98, 100,179.60 and 20,047.92

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Solution

The fourth proportional to 66,805.98, 100,179.60 and 20,047.92 is: 30,063.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,805.98 : 100,179.60 = 20,047.92 : x
  2. Step 2: Convert to fraction form
    66,805.98/100,179.60 = 20,047.92/x
  3. Step 3: Cross multiply
    66,805.98x = 100,179.60 × 20,047.92
  4. Step 4: Simplify right side
    66,805.98x = 2,008,392,606.43
  5. Step 5: Solve for x
    x = 2,008,392,606.43/66,805.98
  6. Step 6: Final answer
    x = 30,063.07

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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.