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Finding the Fourth Proportional to 66,930, 100,395 and 23,154

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Solution

The fourth proportional to 66,930, 100,395 and 23,154 is: 34,731

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,930 : 100,395 = 23,154 : x
  2. Step 2: Convert to fraction form
    66,930/100,395 = 23,154/x
  3. Step 3: Cross multiply
    66,930x = 100,395 × 23,154
  4. Step 4: Simplify right side
    66,930x = 2,324,545,830
  5. Step 5: Solve for x
    x = 2,324,545,830/66,930
  6. Step 6: Final answer
    x = 34,731

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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.