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Finding the Fourth Proportional to 69,658.54, 103,753.80 and 68,200.54

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Solution

The fourth proportional to 69,658.54, 103,753.80 and 68,200.54 is: 101,582.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,658.54 : 103,753.80 = 68,200.54 : x
  2. Step 2: Convert to fraction form
    69,658.54/103,753.80 = 68,200.54/x
  3. Step 3: Cross multiply
    69,658.54x = 103,753.80 × 68,200.54
  4. Step 4: Simplify right side
    69,658.54x = 7,076,065,187.05
  5. Step 5: Solve for x
    x = 7,076,065,187.05/69,658.54
  6. Step 6: Final answer
    x = 101,582.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.