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Finding the Fourth Proportional to 66,662.82, 100,031.13 and 39,943.17

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Solution

The fourth proportional to 66,662.82, 100,031.13 and 39,943.17 is: 59,936.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,662.82 : 100,031.13 = 39,943.17 : x
  2. Step 2: Convert to fraction form
    66,662.82/100,031.13 = 39,943.17/x
  3. Step 3: Cross multiply
    66,662.82x = 100,031.13 × 39,943.17
  4. Step 4: Simplify right side
    66,662.82x = 3,995,560,430.88
  5. Step 5: Solve for x
    x = 3,995,560,430.88/66,662.82
  6. Step 6: Final answer
    x = 59,936.86

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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.