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Finding the Fourth Proportional to 54,017.40, 81,050.40 and 18,982.20

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Solution

The fourth proportional to 54,017.40, 81,050.40 and 18,982.20 is: 28,481.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,017.40 : 81,050.40 = 18,982.20 : x
  2. Step 2: Convert to fraction form
    54,017.40/81,050.40 = 18,982.20/x
  3. Step 3: Cross multiply
    54,017.40x = 81,050.40 × 18,982.20
  4. Step 4: Simplify right side
    54,017.40x = 1,538,514,902.88
  5. Step 5: Solve for x
    x = 1,538,514,902.88/54,017.40
  6. Step 6: Final answer
    x = 28,481.84

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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.