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Finding the Fourth Proportional to 73,811.80, 110,717.70 and 40,634.20

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Solution

The fourth proportional to 73,811.80, 110,717.70 and 40,634.20 is: 60,951.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,811.80 : 110,717.70 = 40,634.20 : x
  2. Step 2: Convert to fraction form
    73,811.80/110,717.70 = 40,634.20/x
  3. Step 3: Cross multiply
    73,811.80x = 110,717.70 × 40,634.20
  4. Step 4: Simplify right side
    73,811.80x = 4,498,925,165.34
  5. Step 5: Solve for x
    x = 4,498,925,165.34/73,811.80
  6. Step 6: Final answer
    x = 60,951.30

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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.