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Finding the Fourth Proportional to 66,624.40, 91,940.58 and 36,409.08

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Solution

The fourth proportional to 66,624.40, 91,940.58 and 36,409.08 is: 50,243.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,624.40 : 91,940.58 = 36,409.08 : x
  2. Step 2: Convert to fraction form
    66,624.40/91,940.58 = 36,409.08/x
  3. Step 3: Cross multiply
    66,624.40x = 91,940.58 × 36,409.08
  4. Step 4: Simplify right side
    66,624.40x = 3,347,471,932.47
  5. Step 5: Solve for x
    x = 3,347,471,932.47/66,624.40
  6. Step 6: Final answer
    x = 50,243.93

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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.