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Finding the Fourth Proportional to 68,529.82, 102,724.71 and 38,885.03

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Solution

The fourth proportional to 68,529.82, 102,724.71 and 38,885.03 is: 58,287.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,529.82 : 102,724.71 = 38,885.03 : x
  2. Step 2: Convert to fraction form
    68,529.82/102,724.71 = 38,885.03/x
  3. Step 3: Cross multiply
    68,529.82x = 102,724.71 × 38,885.03
  4. Step 4: Simplify right side
    68,529.82x = 3,994,453,430.09
  5. Step 5: Solve for x
    x = 3,994,453,430.09/68,529.82
  6. Step 6: Final answer
    x = 58,287.81

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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.