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Finding the Fourth Proportional to 66,716.72, 92,054.00 and 39,853.97

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Solution

The fourth proportional to 66,716.72, 92,054.00 and 39,853.97 is: 54,989.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,716.72 : 92,054.00 = 39,853.97 : x
  2. Step 2: Convert to fraction form
    66,716.72/92,054.00 = 39,853.97/x
  3. Step 3: Cross multiply
    66,716.72x = 92,054.00 × 39,853.97
  4. Step 4: Simplify right side
    66,716.72x = 3,668,716,694.84
  5. Step 5: Solve for x
    x = 3,668,716,694.84/66,716.72
  6. Step 6: Final answer
    x = 54,989.47

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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.