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Finding the Fourth Proportional to 45,463.92, 68,191.11 and 12,187.50

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Solution

The fourth proportional to 45,463.92, 68,191.11 and 12,187.50 is: 18,279.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,463.92 : 68,191.11 = 12,187.50 : x
  2. Step 2: Convert to fraction form
    45,463.92/68,191.11 = 12,187.50/x
  3. Step 3: Cross multiply
    45,463.92x = 68,191.11 × 12,187.50
  4. Step 4: Simplify right side
    45,463.92x = 831,079,153.13
  5. Step 5: Solve for x
    x = 831,079,153.13/45,463.92
  6. Step 6: Final answer
    x = 18,279.97

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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.