Home / 54,018.20-81,027.30-18,954.20

Finding the Fourth Proportional to 54,018.20, 81,027.30 and 18,954.20

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Solution

The fourth proportional to 54,018.20, 81,027.30 and 18,954.20 is: 28,431.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,018.20 : 81,027.30 = 18,954.20 : x
  2. Step 2: Convert to fraction form
    54,018.20/81,027.30 = 18,954.20/x
  3. Step 3: Cross multiply
    54,018.20x = 81,027.30 × 18,954.20
  4. Step 4: Simplify right side
    54,018.20x = 1,535,807,649.66
  5. Step 5: Solve for x
    x = 1,535,807,649.66/54,018.20
  6. Step 6: Final answer
    x = 28,431.30

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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.