Home / 54,645.81-81,989.36-21,389.64

Finding the Fourth Proportional to 54,645.81, 81,989.36 and 21,389.64

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Solution

The fourth proportional to 54,645.81, 81,989.36 and 21,389.64 is: 32,092.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,645.81 : 81,989.36 = 21,389.64 : x
  2. Step 2: Convert to fraction form
    54,645.81/81,989.36 = 21,389.64/x
  3. Step 3: Cross multiply
    54,645.81x = 81,989.36 × 21,389.64
  4. Step 4: Simplify right side
    54,645.81x = 1,753,722,894.23
  5. Step 5: Solve for x
    x = 1,753,722,894.23/54,645.81
  6. Step 6: Final answer
    x = 32,092.54

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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.