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Finding the Fourth Proportional to 84,410.40, 126,615.60 and 22,080.90

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Solution

The fourth proportional to 84,410.40, 126,615.60 and 22,080.90 is: 33,121.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,410.40 : 126,615.60 = 22,080.90 : x
  2. Step 2: Convert to fraction form
    84,410.40/126,615.60 = 22,080.90/x
  3. Step 3: Cross multiply
    84,410.40x = 126,615.60 × 22,080.90
  4. Step 4: Simplify right side
    84,410.40x = 2,795,786,402.04
  5. Step 5: Solve for x
    x = 2,795,786,402.04/84,410.40
  6. Step 6: Final answer
    x = 33,121.35

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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.