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Finding the Fourth Proportional to 68,427.20, 102,717.60 and 52,913.60

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Solution

The fourth proportional to 68,427.20, 102,717.60 and 52,913.60 is: 79,429.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,427.20 : 102,717.60 = 52,913.60 : x
  2. Step 2: Convert to fraction form
    68,427.20/102,717.60 = 52,913.60/x
  3. Step 3: Cross multiply
    68,427.20x = 102,717.60 × 52,913.60
  4. Step 4: Simplify right side
    68,427.20x = 5,435,157,999.36
  5. Step 5: Solve for x
    x = 5,435,157,999.36/68,427.20
  6. Step 6: Final answer
    x = 79,429.79

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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.