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Finding the Fourth Proportional to 68,851.32, 102,704.79 and 67,709.45

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Solution

The fourth proportional to 68,851.32, 102,704.79 and 67,709.45 is: 101,001.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,851.32 : 102,704.79 = 67,709.45 : x
  2. Step 2: Convert to fraction form
    68,851.32/102,704.79 = 67,709.45/x
  3. Step 3: Cross multiply
    68,851.32x = 102,704.79 × 67,709.45
  4. Step 4: Simplify right side
    68,851.32x = 6,954,085,353.94
  5. Step 5: Solve for x
    x = 6,954,085,353.94/68,851.32
  6. Step 6: Final answer
    x = 101,001.49

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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.