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Finding the Fourth Proportional to 66,647.70, 91,974.01 and 36,433.38

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Solution

The fourth proportional to 66,647.70, 91,974.01 and 36,433.38 is: 50,278.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,647.70 : 91,974.01 = 36,433.38 : x
  2. Step 2: Convert to fraction form
    66,647.70/91,974.01 = 36,433.38/x
  3. Step 3: Cross multiply
    66,647.70x = 91,974.01 × 36,433.38
  4. Step 4: Simplify right side
    66,647.70x = 3,350,923,874.29
  5. Step 5: Solve for x
    x = 3,350,923,874.29/66,647.70
  6. Step 6: Final answer
    x = 50,278.16

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1.5x scale

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.