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Finding the Fourth Proportional to 66,540.40, 91,825.56 and 36,732.40

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Solution

The fourth proportional to 66,540.40, 91,825.56 and 36,732.40 is: 50,690.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,540.40 : 91,825.56 = 36,732.40 : x
  2. Step 2: Convert to fraction form
    66,540.40/91,825.56 = 36,732.40/x
  3. Step 3: Cross multiply
    66,540.40x = 91,825.56 × 36,732.40
  4. Step 4: Simplify right side
    66,540.40x = 3,372,973,200.14
  5. Step 5: Solve for x
    x = 3,372,973,200.14/66,540.40
  6. Step 6: Final answer
    x = 50,690.61

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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.