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Finding the Fourth Proportional to 66,356.59, 91,571.62 and 36,141.82

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Solution

The fourth proportional to 66,356.59, 91,571.62 and 36,141.82 is: 49,875.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,356.59 : 91,571.62 = 36,141.82 : x
  2. Step 2: Convert to fraction form
    66,356.59/91,571.62 = 36,141.82/x
  3. Step 3: Cross multiply
    66,356.59x = 91,571.62 × 36,141.82
  4. Step 4: Simplify right side
    66,356.59x = 3,309,565,007.15
  5. Step 5: Solve for x
    x = 3,309,565,007.15/66,356.59
  6. Step 6: Final answer
    x = 49,875.45

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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.