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Finding the Fourth Proportional to 68,269.20, 102,403.80 and 60,493.20

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Solution

The fourth proportional to 68,269.20, 102,403.80 and 60,493.20 is: 90,739.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,269.20 : 102,403.80 = 60,493.20 : x
  2. Step 2: Convert to fraction form
    68,269.20/102,403.80 = 60,493.20/x
  3. Step 3: Cross multiply
    68,269.20x = 102,403.80 × 60,493.20
  4. Step 4: Simplify right side
    68,269.20x = 6,194,733,554.16
  5. Step 5: Solve for x
    x = 6,194,733,554.16/68,269.20
  6. Step 6: Final answer
    x = 90,739.80

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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.