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Finding the Fourth Proportional to 68,170.91, 94,027.68 and 55,424.03

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Solution

The fourth proportional to 68,170.91, 94,027.68 and 55,424.03 is: 76,445.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,170.91 : 94,027.68 = 55,424.03 : x
  2. Step 2: Convert to fraction form
    68,170.91/94,027.68 = 55,424.03/x
  3. Step 3: Cross multiply
    68,170.91x = 94,027.68 × 55,424.03
  4. Step 4: Simplify right side
    68,170.91x = 5,211,392,487.01
  5. Step 5: Solve for x
    x = 5,211,392,487.01/68,170.91
  6. Step 6: Final answer
    x = 76,445.99

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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.