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Finding the Fourth Proportional to 66,917.40, 100,441.71 and 50,974.17

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Solution

The fourth proportional to 66,917.40, 100,441.71 and 50,974.17 is: 76,511.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,917.40 : 100,441.71 = 50,974.17 : x
  2. Step 2: Convert to fraction form
    66,917.40/100,441.71 = 50,974.17/x
  3. Step 3: Cross multiply
    66,917.40x = 100,441.71 × 50,974.17
  4. Step 4: Simplify right side
    66,917.40x = 5,119,932,800.63
  5. Step 5: Solve for x
    x = 5,119,932,800.63/66,917.40
  6. Step 6: Final answer
    x = 76,511.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.