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Finding the Fourth Proportional to 108,487.31, 162,756.95 and 45,272.27

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Solution

The fourth proportional to 108,487.31, 162,756.95 and 45,272.27 is: 67,919.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,487.31 : 162,756.95 = 45,272.27 : x
  2. Step 2: Convert to fraction form
    108,487.31/162,756.95 = 45,272.27/x
  3. Step 3: Cross multiply
    108,487.31x = 162,756.95 × 45,272.27
  4. Step 4: Simplify right side
    108,487.31x = 7,368,375,849.80
  5. Step 5: Solve for x
    x = 7,368,375,849.80/108,487.31
  6. Step 6: Final answer
    x = 67,919.24

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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.