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Finding the Fourth Proportional to 66,540.48, 91,824.40 and 36,324.64

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Solution

The fourth proportional to 66,540.48, 91,824.40 and 36,324.64 is: 50,127.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,540.48 : 91,824.40 = 36,324.64 : x
  2. Step 2: Convert to fraction form
    66,540.48/91,824.40 = 36,324.64/x
  3. Step 3: Cross multiply
    66,540.48x = 91,824.40 × 36,324.64
  4. Step 4: Simplify right side
    66,540.48x = 3,335,488,273.22
  5. Step 5: Solve for x
    x = 3,335,488,273.22/66,540.48
  6. Step 6: Final answer
    x = 50,127.20

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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.