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Finding the Fourth Proportional to 108,481.66, 162,762.51 and 45,308.38

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Solution

The fourth proportional to 108,481.66, 162,762.51 and 45,308.38 is: 67,979.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,481.66 : 162,762.51 = 45,308.38 : x
  2. Step 2: Convert to fraction form
    108,481.66/162,762.51 = 45,308.38/x
  3. Step 3: Cross multiply
    108,481.66x = 162,762.51 × 45,308.38
  4. Step 4: Simplify right side
    108,481.66x = 7,374,505,652.83
  5. Step 5: Solve for x
    x = 7,374,505,652.83/108,481.66
  6. Step 6: Final answer
    x = 67,979.28

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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.