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Finding the Fourth Proportional to 45,676.67, 68,512.25 and 12,395.99

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Solution

The fourth proportional to 45,676.67, 68,512.25 and 12,395.99 is: 18,593.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,676.67 : 68,512.25 = 12,395.99 : x
  2. Step 2: Convert to fraction form
    45,676.67/68,512.25 = 12,395.99/x
  3. Step 3: Cross multiply
    45,676.67x = 68,512.25 × 12,395.99
  4. Step 4: Simplify right side
    45,676.67x = 849,276,761.34
  5. Step 5: Solve for x
    x = 849,276,761.34/45,676.67
  6. Step 6: Final answer
    x = 18,593.23

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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.