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Finding the Fourth Proportional to 66,617.25, 91,931.82 and 36,809.25

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Solution

The fourth proportional to 66,617.25, 91,931.82 and 36,809.25 is: 50,796.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,617.25 : 91,931.82 = 36,809.25 : x
  2. Step 2: Convert to fraction form
    66,617.25/91,931.82 = 36,809.25/x
  3. Step 3: Cross multiply
    66,617.25x = 91,931.82 × 36,809.25
  4. Step 4: Simplify right side
    66,617.25x = 3,383,941,345.34
  5. Step 5: Solve for x
    x = 3,383,941,345.34/66,617.25
  6. Step 6: Final answer
    x = 50,796.77

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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.