Home / 72,133.20-108,170.64-27,761.40

Finding the Fourth Proportional to 72,133.20, 108,170.64 and 27,761.40

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Solution

The fourth proportional to 72,133.20, 108,170.64 and 27,761.40 is: 41,630.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,133.20 : 108,170.64 = 27,761.40 : x
  2. Step 2: Convert to fraction form
    72,133.20/108,170.64 = 27,761.40/x
  3. Step 3: Cross multiply
    72,133.20x = 108,170.64 × 27,761.40
  4. Step 4: Simplify right side
    72,133.20x = 3,002,968,405.30
  5. Step 5: Solve for x
    x = 3,002,968,405.30/72,133.20
  6. Step 6: Final answer
    x = 41,630.88

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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.