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Finding the Fourth Proportional to 66,640.86, 91,958.04 and 36,424.26

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Solution

The fourth proportional to 66,640.86, 91,958.04 and 36,424.26 is: 50,262.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,640.86 : 91,958.04 = 36,424.26 : x
  2. Step 2: Convert to fraction form
    66,640.86/91,958.04 = 36,424.26/x
  3. Step 3: Cross multiply
    66,640.86x = 91,958.04 × 36,424.26
  4. Step 4: Simplify right side
    66,640.86x = 3,349,503,558.05
  5. Step 5: Solve for x
    x = 3,349,503,558.05/66,640.86
  6. Step 6: Final answer
    x = 50,262.01

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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.