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Finding the Fourth Proportional to 73,180.80, 109,771.20 and 26,435.20

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Solution

The fourth proportional to 73,180.80, 109,771.20 and 26,435.20 is: 39,652.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,180.80 : 109,771.20 = 26,435.20 : x
  2. Step 2: Convert to fraction form
    73,180.80/109,771.20 = 26,435.20/x
  3. Step 3: Cross multiply
    73,180.80x = 109,771.20 × 26,435.20
  4. Step 4: Simplify right side
    73,180.80x = 2,901,823,626.24
  5. Step 5: Solve for x
    x = 2,901,823,626.24/73,180.80
  6. Step 6: Final answer
    x = 39,652.80

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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.