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Finding the Fourth Proportional to 73,104.80, 109,657.20 and 20,523.20

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Solution

The fourth proportional to 73,104.80, 109,657.20 and 20,523.20 is: 30,784.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,104.80 : 109,657.20 = 20,523.20 : x
  2. Step 2: Convert to fraction form
    73,104.80/109,657.20 = 20,523.20/x
  3. Step 3: Cross multiply
    73,104.80x = 109,657.20 × 20,523.20
  4. Step 4: Simplify right side
    73,104.80x = 2,250,516,647.04
  5. Step 5: Solve for x
    x = 2,250,516,647.04/73,104.80
  6. Step 6: Final answer
    x = 30,784.80

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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.