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Finding the Fourth Proportional to 66,551.74, 91,837.25 and 36,330.91

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Solution

The fourth proportional to 66,551.74, 91,837.25 and 36,330.91 is: 50,134.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,551.74 : 91,837.25 = 36,330.91 : x
  2. Step 2: Convert to fraction form
    66,551.74/91,837.25 = 36,330.91/x
  3. Step 3: Cross multiply
    66,551.74x = 91,837.25 × 36,330.91
  4. Step 4: Simplify right side
    66,551.74x = 3,336,530,864.40
  5. Step 5: Solve for x
    x = 3,336,530,864.40/66,551.74
  6. Step 6: Final answer
    x = 50,134.39

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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.