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Finding the Fourth Proportional to 108,521.73, 162,822.49 and 45,348.21

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Solution

The fourth proportional to 108,521.73, 162,822.49 and 45,348.21 is: 68,038.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,521.73 : 162,822.49 = 45,348.21 : x
  2. Step 2: Convert to fraction form
    108,521.73/162,822.49 = 45,348.21/x
  3. Step 3: Cross multiply
    108,521.73x = 162,822.49 × 45,348.21
  4. Step 4: Simplify right side
    108,521.73x = 7,383,708,355.87
  5. Step 5: Solve for x
    x = 7,383,708,355.87/108,521.73
  6. Step 6: Final answer
    x = 68,038.98

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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.