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Finding the Fourth Proportional to 68,697.97, 102,887.03 and 66,806.21

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Solution

The fourth proportional to 68,697.97, 102,887.03 and 66,806.21 is: 100,053.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,697.97 : 102,887.03 = 66,806.21 : x
  2. Step 2: Convert to fraction form
    68,697.97/102,887.03 = 66,806.21/x
  3. Step 3: Cross multiply
    68,697.97x = 102,887.03 × 66,806.21
  4. Step 4: Simplify right side
    68,697.97x = 6,873,492,956.69
  5. Step 5: Solve for x
    x = 6,873,492,956.69/68,697.97
  6. Step 6: Final answer
    x = 100,053.80

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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.