Home / 66,321.20-91,520.28-36,105.74

Finding the Fourth Proportional to 66,321.20, 91,520.28 and 36,105.74

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Solution

The fourth proportional to 66,321.20, 91,520.28 and 36,105.74 is: 49,824.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,321.20 : 91,520.28 = 36,105.74 : x
  2. Step 2: Convert to fraction form
    66,321.20/91,520.28 = 36,105.74/x
  3. Step 3: Cross multiply
    66,321.20x = 91,520.28 × 36,105.74
  4. Step 4: Simplify right side
    66,321.20x = 3,304,407,434.41
  5. Step 5: Solve for x
    x = 3,304,407,434.41/66,321.20
  6. Step 6: Final answer
    x = 49,824.30

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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.