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Finding the Fourth Proportional to 68,634.60, 102,495.14 and 67,892.39

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Solution

The fourth proportional to 68,634.60, 102,495.14 and 67,892.39 is: 101,386.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,634.60 : 102,495.14 = 67,892.39 : x
  2. Step 2: Convert to fraction form
    68,634.60/102,495.14 = 67,892.39/x
  3. Step 3: Cross multiply
    68,634.60x = 102,495.14 × 67,892.39
  4. Step 4: Simplify right side
    68,634.60x = 6,958,640,017.98
  5. Step 5: Solve for x
    x = 6,958,640,017.98/68,634.60
  6. Step 6: Final answer
    x = 101,386.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.