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Finding the Fourth Proportional to 73,489.80, 110,234.70 and 38,440.20

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Solution

The fourth proportional to 73,489.80, 110,234.70 and 38,440.20 is: 57,660.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,489.80 : 110,234.70 = 38,440.20 : x
  2. Step 2: Convert to fraction form
    73,489.80/110,234.70 = 38,440.20/x
  3. Step 3: Cross multiply
    73,489.80x = 110,234.70 × 38,440.20
  4. Step 4: Simplify right side
    73,489.80x = 4,237,443,914.94
  5. Step 5: Solve for x
    x = 4,237,443,914.94/73,489.80
  6. Step 6: Final answer
    x = 57,660.30

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1.5x scale

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.