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Finding the Fourth Proportional to 66,096.89, 91,179.92 and 42,198.45

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Solution

The fourth proportional to 66,096.89, 91,179.92 and 42,198.45 is: 58,212.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,096.89 : 91,179.92 = 42,198.45 : x
  2. Step 2: Convert to fraction form
    66,096.89/91,179.92 = 42,198.45/x
  3. Step 3: Cross multiply
    66,096.89x = 91,179.92 × 42,198.45
  4. Step 4: Simplify right side
    66,096.89x = 3,847,651,400.62
  5. Step 5: Solve for x
    x = 3,847,651,400.62/66,096.89
  6. Step 6: Final answer
    x = 58,212.29

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1.5x scale

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.