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Finding the Fourth Proportional to 66,469.39, 91,728.85 and 36,254.71

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Solution

The fourth proportional to 66,469.39, 91,728.85 and 36,254.71 is: 50,032.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,469.39 : 91,728.85 = 36,254.71 : x
  2. Step 2: Convert to fraction form
    66,469.39/91,728.85 = 36,254.71/x
  3. Step 3: Cross multiply
    66,469.39x = 91,728.85 × 36,254.71
  4. Step 4: Simplify right side
    66,469.39x = 3,325,602,940.26
  5. Step 5: Solve for x
    x = 3,325,602,940.26/66,469.39
  6. Step 6: Final answer
    x = 50,032.10

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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.