Home / 68,786.20-103,082.10-42,412.60

Finding the Fourth Proportional to 68,786.20, 103,082.10 and 42,412.60

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Solution

The fourth proportional to 68,786.20, 103,082.10 and 42,412.60 is: 63,558.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,786.20 : 103,082.10 = 42,412.60 : x
  2. Step 2: Convert to fraction form
    68,786.20/103,082.10 = 42,412.60/x
  3. Step 3: Cross multiply
    68,786.20x = 103,082.10 × 42,412.60
  4. Step 4: Simplify right side
    68,786.20x = 4,371,979,874.46
  5. Step 5: Solve for x
    x = 4,371,979,874.46/68,786.20
  6. Step 6: Final answer
    x = 63,558.97

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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.