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Finding the Fourth Proportional to 68,361.50, 102,543.88 and 26,808.50

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Solution

The fourth proportional to 68,361.50, 102,543.88 and 26,808.50 is: 40,213.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,361.50 : 102,543.88 = 26,808.50 : x
  2. Step 2: Convert to fraction form
    68,361.50/102,543.88 = 26,808.50/x
  3. Step 3: Cross multiply
    68,361.50x = 102,543.88 × 26,808.50
  4. Step 4: Simplify right side
    68,361.50x = 2,749,047,606.98
  5. Step 5: Solve for x
    x = 2,749,047,606.98/68,361.50
  6. Step 6: Final answer
    x = 40,213.39

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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.