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Finding the Fourth Proportional to 68,424.50, 103,183.92 and 67,488.86

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Solution

The fourth proportional to 68,424.50, 103,183.92 and 67,488.86 is: 101,772.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,424.50 : 103,183.92 = 67,488.86 : x
  2. Step 2: Convert to fraction form
    68,424.50/103,183.92 = 67,488.86/x
  3. Step 3: Cross multiply
    68,424.50x = 103,183.92 × 67,488.86
  4. Step 4: Simplify right side
    68,424.50x = 6,963,765,131.13
  5. Step 5: Solve for x
    x = 6,963,765,131.13/68,424.50
  6. Step 6: Final answer
    x = 101,772.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.