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Finding the Fourth Proportional to 73,128.76, 100,917.69 and 41,299.70

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Solution

The fourth proportional to 73,128.76, 100,917.69 and 41,299.70 is: 56,993.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,128.76 : 100,917.69 = 41,299.70 : x
  2. Step 2: Convert to fraction form
    73,128.76/100,917.69 = 41,299.70/x
  3. Step 3: Cross multiply
    73,128.76x = 100,917.69 × 41,299.70
  4. Step 4: Simplify right side
    73,128.76x = 4,167,870,573.99
  5. Step 5: Solve for x
    x = 4,167,870,573.99/73,128.76
  6. Step 6: Final answer
    x = 56,993.59

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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.