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Finding the Fourth Proportional to 68,407.23, 102,626.66 and 21,660.11

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Solution

The fourth proportional to 68,407.23, 102,626.66 and 21,660.11 is: 32,495.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,407.23 : 102,626.66 = 21,660.11 : x
  2. Step 2: Convert to fraction form
    68,407.23/102,626.66 = 21,660.11/x
  3. Step 3: Cross multiply
    68,407.23x = 102,626.66 × 21,660.11
  4. Step 4: Simplify right side
    68,407.23x = 2,222,904,744.53
  5. Step 5: Solve for x
    x = 2,222,904,744.53/68,407.23
  6. Step 6: Final answer
    x = 32,495.17

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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.