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Finding the Fourth Proportional to 66,618.94, 91,934.04 and 36,404.53

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Solution

The fourth proportional to 66,618.94, 91,934.04 and 36,404.53 is: 50,238.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,618.94 : 91,934.04 = 36,404.53 : x
  2. Step 2: Convert to fraction form
    66,618.94/91,934.04 = 36,404.53/x
  3. Step 3: Cross multiply
    66,618.94x = 91,934.04 × 36,404.53
  4. Step 4: Simplify right side
    66,618.94x = 3,346,815,517.20
  5. Step 5: Solve for x
    x = 3,346,815,517.20/66,618.94
  6. Step 6: Final answer
    x = 50,238.20

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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.