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Finding the Fourth Proportional to 66,207, 91,365.66 and 36,399

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Solution

The fourth proportional to 66,207, 91,365.66 and 36,399 is: 50,230.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,207 : 91,365.66 = 36,399 : x
  2. Step 2: Convert to fraction form
    66,207/91,365.66 = 36,399/x
  3. Step 3: Cross multiply
    66,207x = 91,365.66 × 36,399
  4. Step 4: Simplify right side
    66,207x = 3,325,618,658.34
  5. Step 5: Solve for x
    x = 3,325,618,658.34/66,207
  6. Step 6: Final answer
    x = 50,230.62

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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.