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Finding the Fourth Proportional to 80,455.60, 120,726.60 and 33,713.20

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Solution

The fourth proportional to 80,455.60, 120,726.60 and 33,713.20 is: 50,587.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,455.60 : 120,726.60 = 33,713.20 : x
  2. Step 2: Convert to fraction form
    80,455.60/120,726.60 = 33,713.20/x
  3. Step 3: Cross multiply
    80,455.60x = 120,726.60 × 33,713.20
  4. Step 4: Simplify right side
    80,455.60x = 4,070,080,011.12
  5. Step 5: Solve for x
    x = 4,070,080,011.12/80,455.60
  6. Step 6: Final answer
    x = 50,587.90

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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.