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Finding the Fourth Proportional to 108,553.40, 162,856.02 and 45,338.30

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Solution

The fourth proportional to 108,553.40, 162,856.02 and 45,338.30 is: 68,018.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,553.40 : 162,856.02 = 45,338.30 : x
  2. Step 2: Convert to fraction form
    108,553.40/162,856.02 = 45,338.30/x
  3. Step 3: Cross multiply
    108,553.40x = 162,856.02 × 45,338.30
  4. Step 4: Simplify right side
    108,553.40x = 7,383,615,091.57
  5. Step 5: Solve for x
    x = 7,383,615,091.57/108,553.40
  6. Step 6: Final answer
    x = 68,018.28

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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.