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Finding the Fourth Proportional to 66,361.78, 91,577.98 and 36,146.75

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Solution

The fourth proportional to 66,361.78, 91,577.98 and 36,146.75 is: 49,881.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,361.78 : 91,577.98 = 36,146.75 : x
  2. Step 2: Convert to fraction form
    66,361.78/91,577.98 = 36,146.75/x
  3. Step 3: Cross multiply
    66,361.78x = 91,577.98 × 36,146.75
  4. Step 4: Simplify right side
    66,361.78x = 3,310,246,487.14
  5. Step 5: Solve for x
    x = 3,310,246,487.14/66,361.78
  6. Step 6: Final answer
    x = 49,881.82

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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.