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Finding the Fourth Proportional to 81,523.40, 122,303.48 and 28,932.88

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Solution

The fourth proportional to 81,523.40, 122,303.48 and 28,932.88 is: 43,405.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,523.40 : 122,303.48 = 28,932.88 : x
  2. Step 2: Convert to fraction form
    81,523.40/122,303.48 = 28,932.88/x
  3. Step 3: Cross multiply
    81,523.40x = 122,303.48 × 28,932.88
  4. Step 4: Simplify right side
    81,523.40x = 3,538,591,910.42
  5. Step 5: Solve for x
    x = 3,538,591,910.42/81,523.40
  6. Step 6: Final answer
    x = 43,405.84

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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.