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Finding the Fourth Proportional to 108,586.82, 162,766.53 and 45,443.12

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Solution

The fourth proportional to 108,586.82, 162,766.53 and 45,443.12 is: 68,117.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,586.82 : 162,766.53 = 45,443.12 : x
  2. Step 2: Convert to fraction form
    108,586.82/162,766.53 = 45,443.12/x
  3. Step 3: Cross multiply
    108,586.82x = 162,766.53 × 45,443.12
  4. Step 4: Simplify right side
    108,586.82x = 7,396,618,140.94
  5. Step 5: Solve for x
    x = 7,396,618,140.94/108,586.82
  6. Step 6: Final answer
    x = 68,117.09

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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.