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Finding the Fourth Proportional to 66,422.35, 91,660.71 and 36,207.19

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Solution

The fourth proportional to 66,422.35, 91,660.71 and 36,207.19 is: 49,964.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,422.35 : 91,660.71 = 36,207.19 : x
  2. Step 2: Convert to fraction form
    66,422.35/91,660.71 = 36,207.19/x
  3. Step 3: Cross multiply
    66,422.35x = 91,660.71 × 36,207.19
  4. Step 4: Simplify right side
    66,422.35x = 3,318,776,742.50
  5. Step 5: Solve for x
    x = 3,318,776,742.50/66,422.35
  6. Step 6: Final answer
    x = 49,964.76

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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.