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Finding the Fourth Proportional to 66,453.76, 91,706.21 and 36,238.31

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Solution

The fourth proportional to 66,453.76, 91,706.21 and 36,238.31 is: 50,008.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,453.76 : 91,706.21 = 36,238.31 : x
  2. Step 2: Convert to fraction form
    66,453.76/91,706.21 = 36,238.31/x
  3. Step 3: Cross multiply
    66,453.76x = 91,706.21 × 36,238.31
  4. Step 4: Simplify right side
    66,453.76x = 3,323,278,066.91
  5. Step 5: Solve for x
    x = 3,323,278,066.91/66,453.76
  6. Step 6: Final answer
    x = 50,008.88

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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.