Home / 108,579.31-162,864.70-45,383.11

Finding the Fourth Proportional to 108,579.31, 162,864.70 and 45,383.11

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Solution

The fourth proportional to 108,579.31, 162,864.70 and 45,383.11 is: 68,072.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,579.31 : 162,864.70 = 45,383.11 : x
  2. Step 2: Convert to fraction form
    108,579.31/162,864.70 = 45,383.11/x
  3. Step 3: Cross multiply
    108,579.31x = 162,864.70 × 45,383.11
  4. Step 4: Simplify right side
    108,579.31x = 7,391,306,595.22
  5. Step 5: Solve for x
    x = 7,391,306,595.22/108,579.31
  6. Step 6: Final answer
    x = 68,072.88

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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.