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Finding the Fourth Proportional to 108,462.75, 162,629.33 and 45,206.61

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Solution

The fourth proportional to 108,462.75, 162,629.33 and 45,206.61 is: 67,782.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,462.75 : 162,629.33 = 45,206.61 : x
  2. Step 2: Convert to fraction form
    108,462.75/162,629.33 = 45,206.61/x
  3. Step 3: Cross multiply
    108,462.75x = 162,629.33 × 45,206.61
  4. Step 4: Simplify right side
    108,462.75x = 7,351,920,469.84
  5. Step 5: Solve for x
    x = 7,351,920,469.84/108,462.75
  6. Step 6: Final answer
    x = 67,782.91

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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.