Home / 54,390.44-81,585.64-19,331.48

Finding the Fourth Proportional to 54,390.44, 81,585.64 and 19,331.48

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Solution

The fourth proportional to 54,390.44, 81,585.64 and 19,331.48 is: 28,997.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,390.44 : 81,585.64 = 19,331.48 : x
  2. Step 2: Convert to fraction form
    54,390.44/81,585.64 = 19,331.48/x
  3. Step 3: Cross multiply
    54,390.44x = 81,585.64 × 19,331.48
  4. Step 4: Simplify right side
    54,390.44x = 1,577,171,167.95
  5. Step 5: Solve for x
    x = 1,577,171,167.95/54,390.44
  6. Step 6: Final answer
    x = 28,997.21

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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.