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Finding the Fourth Proportional to 68,980.91, 95,204.54 and 40,317.54

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Solution

The fourth proportional to 68,980.91, 95,204.54 and 40,317.54 is: 55,644.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,980.91 : 95,204.54 = 40,317.54 : x
  2. Step 2: Convert to fraction form
    68,980.91/95,204.54 = 40,317.54/x
  3. Step 3: Cross multiply
    68,980.91x = 95,204.54 × 40,317.54
  4. Step 4: Simplify right side
    68,980.91x = 3,838,412,648.04
  5. Step 5: Solve for x
    x = 3,838,412,648.04/68,980.91
  6. Step 6: Final answer
    x = 55,644.57

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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.