Home / 54,445.39-81,678.41-18,905.32

Finding the Fourth Proportional to 54,445.39, 81,678.41 and 18,905.32

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Solution

The fourth proportional to 54,445.39, 81,678.41 and 18,905.32 is: 28,361.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,445.39 : 81,678.41 = 18,905.32 : x
  2. Step 2: Convert to fraction form
    54,445.39/81,678.41 = 18,905.32/x
  3. Step 3: Cross multiply
    54,445.39x = 81,678.41 × 18,905.32
  4. Step 4: Simplify right side
    54,445.39x = 1,544,156,556.61
  5. Step 5: Solve for x
    x = 1,544,156,556.61/54,445.39
  6. Step 6: Final answer
    x = 28,361.57

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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.