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Finding the Fourth Proportional to 68,408.25, 102,612.38 and 18,484.52

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Solution

The fourth proportional to 68,408.25, 102,612.38 and 18,484.52 is: 27,726.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,408.25 : 102,612.38 = 18,484.52 : x
  2. Step 2: Convert to fraction form
    68,408.25/102,612.38 = 18,484.52/x
  3. Step 3: Cross multiply
    68,408.25x = 102,612.38 × 18,484.52
  4. Step 4: Simplify right side
    68,408.25x = 1,896,739,984.87
  5. Step 5: Solve for x
    x = 1,896,739,984.87/68,408.25
  6. Step 6: Final answer
    x = 27,726.77

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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.