Home / 54,437.04-81,636.12-18,889.20

Finding the Fourth Proportional to 54,437.04, 81,636.12 and 18,889.20

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Solution

The fourth proportional to 54,437.04, 81,636.12 and 18,889.20 is: 28,327.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,437.04 : 81,636.12 = 18,889.20 : x
  2. Step 2: Convert to fraction form
    54,437.04/81,636.12 = 18,889.20/x
  3. Step 3: Cross multiply
    54,437.04x = 81,636.12 × 18,889.20
  4. Step 4: Simplify right side
    54,437.04x = 1,542,040,997.90
  5. Step 5: Solve for x
    x = 1,542,040,997.90/54,437.04
  6. Step 6: Final answer
    x = 28,327.05

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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.