Home / 68,229.20-102,420.60-52,715.60

Finding the Fourth Proportional to 68,229.20, 102,420.60 and 52,715.60

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Solution

The fourth proportional to 68,229.20, 102,420.60 and 52,715.60 is: 79,132.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,229.20 : 102,420.60 = 52,715.60 : x
  2. Step 2: Convert to fraction form
    68,229.20/102,420.60 = 52,715.60/x
  3. Step 3: Cross multiply
    68,229.20x = 102,420.60 × 52,715.60
  4. Step 4: Simplify right side
    68,229.20x = 5,399,163,381.36
  5. Step 5: Solve for x
    x = 5,399,163,381.36/68,229.20
  6. Step 6: Final answer
    x = 79,132.74

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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.