Home / 68,965.78-102,845.15-68,335.19

Finding the Fourth Proportional to 68,965.78, 102,845.15 and 68,335.19

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Solution

The fourth proportional to 68,965.78, 102,845.15 and 68,335.19 is: 101,904.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,965.78 : 102,845.15 = 68,335.19 : x
  2. Step 2: Convert to fraction form
    68,965.78/102,845.15 = 68,335.19/x
  3. Step 3: Cross multiply
    68,965.78x = 102,845.15 × 68,335.19
  4. Step 4: Simplify right side
    68,965.78x = 7,027,942,522.44
  5. Step 5: Solve for x
    x = 7,027,942,522.44/68,965.78
  6. Step 6: Final answer
    x = 101,904.78

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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.