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Finding the Fourth Proportional to 68,704.25, 102,881.41 and 45,259.61

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Solution

The fourth proportional to 68,704.25, 102,881.41 and 45,259.61 is: 67,774.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,704.25 : 102,881.41 = 45,259.61 : x
  2. Step 2: Convert to fraction form
    68,704.25/102,881.41 = 45,259.61/x
  3. Step 3: Cross multiply
    68,704.25x = 102,881.41 × 45,259.61
  4. Step 4: Simplify right side
    68,704.25x = 4,656,371,865.29
  5. Step 5: Solve for x
    x = 4,656,371,865.29/68,704.25
  6. Step 6: Final answer
    x = 67,774.15

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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.