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Finding the Fourth Proportional to 65,379.22, 90,215.88 and 36,694.99

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Solution

The fourth proportional to 65,379.22, 90,215.88 and 36,694.99 is: 50,634.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,379.22 : 90,215.88 = 36,694.99 : x
  2. Step 2: Convert to fraction form
    65,379.22/90,215.88 = 36,694.99/x
  3. Step 3: Cross multiply
    65,379.22x = 90,215.88 × 36,694.99
  4. Step 4: Simplify right side
    65,379.22x = 3,310,470,789.60
  5. Step 5: Solve for x
    x = 3,310,470,789.60/65,379.22
  6. Step 6: Final answer
    x = 50,634.91

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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.