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Finding the Fourth Proportional to 66,721.62, 92,074.32 and 36,506.60

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Solution

The fourth proportional to 66,721.62, 92,074.32 and 36,506.60 is: 50,378.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,721.62 : 92,074.32 = 36,506.60 : x
  2. Step 2: Convert to fraction form
    66,721.62/92,074.32 = 36,506.60/x
  3. Step 3: Cross multiply
    66,721.62x = 92,074.32 × 36,506.60
  4. Step 4: Simplify right side
    66,721.62x = 3,361,320,255.42
  5. Step 5: Solve for x
    x = 3,361,320,255.42/66,721.62
  6. Step 6: Final answer
    x = 50,378.27

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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.