Home / 54,218.43-81,307.53-18,669.83

Finding the Fourth Proportional to 54,218.43, 81,307.53 and 18,669.83

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Solution

The fourth proportional to 54,218.43, 81,307.53 and 18,669.83 is: 27,997.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,218.43 : 81,307.53 = 18,669.83 : x
  2. Step 2: Convert to fraction form
    54,218.43/81,307.53 = 18,669.83/x
  3. Step 3: Cross multiply
    54,218.43x = 81,307.53 × 18,669.83
  4. Step 4: Simplify right side
    54,218.43x = 1,517,997,356.28
  5. Step 5: Solve for x
    x = 1,517,997,356.28/54,218.43
  6. Step 6: Final answer
    x = 27,997.81

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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.