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Finding the Fourth Proportional to 66,074.88, 91,161 and 37,760.40

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Solution

The fourth proportional to 66,074.88, 91,161 and 37,760.40 is: 52,096.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,074.88 : 91,161 = 37,760.40 : x
  2. Step 2: Convert to fraction form
    66,074.88/91,161 = 37,760.40/x
  3. Step 3: Cross multiply
    66,074.88x = 91,161 × 37,760.40
  4. Step 4: Simplify right side
    66,074.88x = 3,442,275,824.40
  5. Step 5: Solve for x
    x = 3,442,275,824.40/66,074.88
  6. Step 6: Final answer
    x = 52,096.59

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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.