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Finding the Fourth Proportional to 108,516.80, 162,759.60 and 41,988.32

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Solution

The fourth proportional to 108,516.80, 162,759.60 and 41,988.32 is: 62,976.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,516.80 : 162,759.60 = 41,988.32 : x
  2. Step 2: Convert to fraction form
    108,516.80/162,759.60 = 41,988.32/x
  3. Step 3: Cross multiply
    108,516.80x = 162,759.60 × 41,988.32
  4. Step 4: Simplify right side
    108,516.80x = 6,834,002,167.87
  5. Step 5: Solve for x
    x = 6,834,002,167.87/108,516.80
  6. Step 6: Final answer
    x = 62,976.44

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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.