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Finding the Fourth Proportional to 66,694.20, 92,040.94 and 38,409

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Solution

The fourth proportional to 66,694.20, 92,040.94 and 38,409 is: 53,006.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,694.20 : 92,040.94 = 38,409 : x
  2. Step 2: Convert to fraction form
    66,694.20/92,040.94 = 38,409/x
  3. Step 3: Cross multiply
    66,694.20x = 92,040.94 × 38,409
  4. Step 4: Simplify right side
    66,694.20x = 3,535,200,464.46
  5. Step 5: Solve for x
    x = 3,535,200,464.46/66,694.20
  6. Step 6: Final answer
    x = 53,006.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.