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Finding the Fourth Proportional to 66,716.94, 92,052.09 and 39,847.62

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Solution

The fourth proportional to 66,716.94, 92,052.09 and 39,847.62 is: 54,979.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,716.94 : 92,052.09 = 39,847.62 : x
  2. Step 2: Convert to fraction form
    66,716.94/92,052.09 = 39,847.62/x
  3. Step 3: Cross multiply
    66,716.94x = 92,052.09 × 39,847.62
  4. Step 4: Simplify right side
    66,716.94x = 3,668,056,702.53
  5. Step 5: Solve for x
    x = 3,668,056,702.53/66,716.94
  6. Step 6: Final answer
    x = 54,979.39

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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.