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Finding the Fourth Proportional to 66,661.50, 91,992.84 and 36,446.97

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Solution

The fourth proportional to 66,661.50, 91,992.84 and 36,446.97 is: 50,296.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,661.50 : 91,992.84 = 36,446.97 : x
  2. Step 2: Convert to fraction form
    66,661.50/91,992.84 = 36,446.97/x
  3. Step 3: Cross multiply
    66,661.50x = 91,992.84 × 36,446.97
  4. Step 4: Simplify right side
    66,661.50x = 3,352,860,279.69
  5. Step 5: Solve for x
    x = 3,352,860,279.69/66,661.50
  6. Step 6: Final answer
    x = 50,296.80

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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.