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Finding the Fourth Proportional to 66,253.60, 91,431.16 and 36,039.60

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Solution

The fourth proportional to 66,253.60, 91,431.16 and 36,039.60 is: 49,735.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,253.60 : 91,431.16 = 36,039.60 : x
  2. Step 2: Convert to fraction form
    66,253.60/91,431.16 = 36,039.60/x
  3. Step 3: Cross multiply
    66,253.60x = 91,431.16 × 36,039.60
  4. Step 4: Simplify right side
    66,253.60x = 3,295,142,433.94
  5. Step 5: Solve for x
    x = 3,295,142,433.94/66,253.60
  6. Step 6: Final answer
    x = 49,735.30

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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.