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Finding the Fourth Proportional to 103,688.68, 155,557.70 and 33,568

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Solution

The fourth proportional to 103,688.68, 155,557.70 and 33,568 is: 50,359.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,688.68 : 155,557.70 = 33,568 : x
  2. Step 2: Convert to fraction form
    103,688.68/155,557.70 = 33,568/x
  3. Step 3: Cross multiply
    103,688.68x = 155,557.70 × 33,568
  4. Step 4: Simplify right side
    103,688.68x = 5,221,760,873.60
  5. Step 5: Solve for x
    x = 5,221,760,873.60/103,688.68
  6. Step 6: Final answer
    x = 50,359.99

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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.