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Finding the Fourth Proportional to 100,428.49, 150,636.54 and 41,262.64

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Solution

The fourth proportional to 100,428.49, 150,636.54 and 41,262.64 is: 61,891.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,428.49 : 150,636.54 = 41,262.64 : x
  2. Step 2: Convert to fraction form
    100,428.49/150,636.54 = 41,262.64/x
  3. Step 3: Cross multiply
    100,428.49x = 150,636.54 × 41,262.64
  4. Step 4: Simplify right side
    100,428.49x = 6,215,661,320.87
  5. Step 5: Solve for x
    x = 6,215,661,320.87/100,428.49
  6. Step 6: Final answer
    x = 61,891.41

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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.