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Finding the Fourth Proportional to 66,270.72, 91,452.87 and 36,055.56

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Solution

The fourth proportional to 66,270.72, 91,452.87 and 36,055.56 is: 49,756.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,270.72 : 91,452.87 = 36,055.56 : x
  2. Step 2: Convert to fraction form
    66,270.72/91,452.87 = 36,055.56/x
  3. Step 3: Cross multiply
    66,270.72x = 91,452.87 × 36,055.56
  4. Step 4: Simplify right side
    66,270.72x = 3,297,384,441.46
  5. Step 5: Solve for x
    x = 3,297,384,441.46/66,270.72
  6. Step 6: Final answer
    x = 49,756.28

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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.