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Finding the Fourth Proportional to 68,706.89, 102,885.37 and 45,262.25

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Solution

The fourth proportional to 68,706.89, 102,885.37 and 45,262.25 is: 67,778.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,706.89 : 102,885.37 = 45,262.25 : x
  2. Step 2: Convert to fraction form
    68,706.89/102,885.37 = 45,262.25/x
  3. Step 3: Cross multiply
    68,706.89x = 102,885.37 × 45,262.25
  4. Step 4: Simplify right side
    68,706.89x = 4,656,823,111.97
  5. Step 5: Solve for x
    x = 4,656,823,111.97/68,706.89
  6. Step 6: Final answer
    x = 67,778.11

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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.