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Finding the Fourth Proportional to 66,636.50, 91,956.98 and 36,422.04

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Solution

The fourth proportional to 66,636.50, 91,956.98 and 36,422.04 is: 50,261.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,636.50 : 91,956.98 = 36,422.04 : x
  2. Step 2: Convert to fraction form
    66,636.50/91,956.98 = 36,422.04/x
  3. Step 3: Cross multiply
    66,636.50x = 91,956.98 × 36,422.04
  4. Step 4: Simplify right side
    66,636.50x = 3,349,260,621.73
  5. Step 5: Solve for x
    x = 3,349,260,621.73/66,636.50
  6. Step 6: Final answer
    x = 50,261.66

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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.