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Finding the Fourth Proportional to 68,254.38, 102,395.88 and 28,811.70

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Solution

The fourth proportional to 68,254.38, 102,395.88 and 28,811.70 is: 43,223.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,254.38 : 102,395.88 = 28,811.70 : x
  2. Step 2: Convert to fraction form
    68,254.38/102,395.88 = 28,811.70/x
  3. Step 3: Cross multiply
    68,254.38x = 102,395.88 × 28,811.70
  4. Step 4: Simplify right side
    68,254.38x = 2,950,199,375.80
  5. Step 5: Solve for x
    x = 2,950,199,375.80/68,254.38
  6. Step 6: Final answer
    x = 43,223.59

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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.