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Finding the Fourth Proportional to 108,479.40, 162,720.54 and 38,309.64

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Solution

The fourth proportional to 108,479.40, 162,720.54 and 38,309.64 is: 57,464.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,479.40 : 162,720.54 = 38,309.64 : x
  2. Step 2: Convert to fraction form
    108,479.40/162,720.54 = 38,309.64/x
  3. Step 3: Cross multiply
    108,479.40x = 162,720.54 × 38,309.64
  4. Step 4: Simplify right side
    108,479.40x = 6,233,765,308.01
  5. Step 5: Solve for x
    x = 6,233,765,308.01/108,479.40
  6. Step 6: Final answer
    x = 57,464.97

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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.