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Finding the Fourth Proportional to 66,497.22, 91,766.70 and 36,282.78

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Solution

The fourth proportional to 66,497.22, 91,766.70 and 36,282.78 is: 50,070.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,497.22 : 91,766.70 = 36,282.78 : x
  2. Step 2: Convert to fraction form
    66,497.22/91,766.70 = 36,282.78/x
  3. Step 3: Cross multiply
    66,497.22x = 91,766.70 × 36,282.78
  4. Step 4: Simplify right side
    66,497.22x = 3,329,550,987.43
  5. Step 5: Solve for x
    x = 3,329,550,987.43/66,497.22
  6. Step 6: Final answer
    x = 50,070.53

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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.