Home / 54,213.36-81,315.24-19,151.28

Finding the Fourth Proportional to 54,213.36, 81,315.24 and 19,151.28

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Solution

The fourth proportional to 54,213.36, 81,315.24 and 19,151.28 is: 28,725.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,213.36 : 81,315.24 = 19,151.28 : x
  2. Step 2: Convert to fraction form
    54,213.36/81,315.24 = 19,151.28/x
  3. Step 3: Cross multiply
    54,213.36x = 81,315.24 × 19,151.28
  4. Step 4: Simplify right side
    54,213.36x = 1,557,290,929.51
  5. Step 5: Solve for x
    x = 1,557,290,929.51/54,213.36
  6. Step 6: Final answer
    x = 28,725.22

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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.