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Finding the Fourth Proportional to 54,777.20, 82,198.20 and 19,712.30

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Solution

The fourth proportional to 54,777.20, 82,198.20 and 19,712.30 is: 29,580.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,777.20 : 82,198.20 = 19,712.30 : x
  2. Step 2: Convert to fraction form
    54,777.20/82,198.20 = 19,712.30/x
  3. Step 3: Cross multiply
    54,777.20x = 82,198.20 × 19,712.30
  4. Step 4: Simplify right side
    54,777.20x = 1,620,315,577.86
  5. Step 5: Solve for x
    x = 1,620,315,577.86/54,777.20
  6. Step 6: Final answer
    x = 29,580.11

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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.