Home / 54,235.87-81,356.70-16,821.79

Finding the Fourth Proportional to 54,235.87, 81,356.70 and 16,821.79

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Solution

The fourth proportional to 54,235.87, 81,356.70 and 16,821.79 is: 25,233.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,235.87 : 81,356.70 = 16,821.79 : x
  2. Step 2: Convert to fraction form
    54,235.87/81,356.70 = 16,821.79/x
  3. Step 3: Cross multiply
    54,235.87x = 81,356.70 × 16,821.79
  4. Step 4: Simplify right side
    54,235.87x = 1,368,565,322.49
  5. Step 5: Solve for x
    x = 1,368,565,322.49/54,235.87
  6. Step 6: Final answer
    x = 25,233.58

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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.