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Finding the Fourth Proportional to 108,489.58, 162,760.16 and 45,274.57

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Solution

The fourth proportional to 108,489.58, 162,760.16 and 45,274.57 is: 67,922.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,489.58 : 162,760.16 = 45,274.57 : x
  2. Step 2: Convert to fraction form
    108,489.58/162,760.16 = 45,274.57/x
  3. Step 3: Cross multiply
    108,489.58x = 162,760.16 × 45,274.57
  4. Step 4: Simplify right side
    108,489.58x = 7,368,895,963.42
  5. Step 5: Solve for x
    x = 7,368,895,963.42/108,489.58
  6. Step 6: Final answer
    x = 67,922.62

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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.