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Finding the Fourth Proportional to 68,406.23, 102,625.16 and 21,659.11

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Solution

The fourth proportional to 68,406.23, 102,625.16 and 21,659.11 is: 32,493.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,406.23 : 102,625.16 = 21,659.11 : x
  2. Step 2: Convert to fraction form
    68,406.23/102,625.16 = 21,659.11/x
  3. Step 3: Cross multiply
    68,406.23x = 102,625.16 × 21,659.11
  4. Step 4: Simplify right side
    68,406.23x = 2,222,769,264.35
  5. Step 5: Solve for x
    x = 2,222,769,264.35/68,406.23
  6. Step 6: Final answer
    x = 32,493.67

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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.