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Finding the Fourth Proportional to 68,980.56, 95,193.53 and 40,301.85

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Solution

The fourth proportional to 68,980.56, 95,193.53 and 40,301.85 is: 55,616.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,980.56 : 95,193.53 = 40,301.85 : x
  2. Step 2: Convert to fraction form
    68,980.56/95,193.53 = 40,301.85/x
  3. Step 3: Cross multiply
    68,980.56x = 95,193.53 × 40,301.85
  4. Step 4: Simplify right side
    68,980.56x = 3,836,475,673.63
  5. Step 5: Solve for x
    x = 3,836,475,673.63/68,980.56
  6. Step 6: Final answer
    x = 55,616.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.