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Finding the Fourth Proportional to 68,812.75, 103,236.47 and 19,564.75

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Solution

The fourth proportional to 68,812.75, 103,236.47 and 19,564.75 is: 29,352.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,812.75 : 103,236.47 = 19,564.75 : x
  2. Step 2: Convert to fraction form
    68,812.75/103,236.47 = 19,564.75/x
  3. Step 3: Cross multiply
    68,812.75x = 103,236.47 × 19,564.75
  4. Step 4: Simplify right side
    68,812.75x = 2,019,795,628.61
  5. Step 5: Solve for x
    x = 2,019,795,628.61/68,812.75
  6. Step 6: Final answer
    x = 29,352.06

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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.