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Finding the Fourth Proportional to 68,418.44, 102,543.80 and 38,861.16

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Solution

The fourth proportional to 68,418.44, 102,543.80 and 38,861.16 is: 58,244.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,418.44 : 102,543.80 = 38,861.16 : x
  2. Step 2: Convert to fraction form
    68,418.44/102,543.80 = 38,861.16/x
  3. Step 3: Cross multiply
    68,418.44x = 102,543.80 × 38,861.16
  4. Step 4: Simplify right side
    68,418.44x = 3,984,971,018.81
  5. Step 5: Solve for x
    x = 3,984,971,018.81/68,418.44
  6. Step 6: Final answer
    x = 58,244.11

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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.