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Finding the Fourth Proportional to 108,487.56, 162,757.32 and 45,272.52

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Solution

The fourth proportional to 108,487.56, 162,757.32 and 45,272.52 is: 67,919.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,487.56 : 162,757.32 = 45,272.52 : x
  2. Step 2: Convert to fraction form
    108,487.56/162,757.32 = 45,272.52/x
  3. Step 3: Cross multiply
    108,487.56x = 162,757.32 × 45,272.52
  4. Step 4: Simplify right side
    108,487.56x = 7,368,433,617.95
  5. Step 5: Solve for x
    x = 7,368,433,617.95/108,487.56
  6. Step 6: Final answer
    x = 67,919.62

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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.