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Finding the Fourth Proportional to 68,359.70, 102,539.25 and 18,444.87

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Solution

The fourth proportional to 68,359.70, 102,539.25 and 18,444.87 is: 27,667.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,359.70 : 102,539.25 = 18,444.87 : x
  2. Step 2: Convert to fraction form
    68,359.70/102,539.25 = 18,444.87/x
  3. Step 3: Cross multiply
    68,359.70x = 102,539.25 × 18,444.87
  4. Step 4: Simplify right side
    68,359.70x = 1,891,323,136.15
  5. Step 5: Solve for x
    x = 1,891,323,136.15/68,359.70
  6. Step 6: Final answer
    x = 27,667.22

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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.