Home / 54,178.26-81,272.80-20,435.74

Finding the Fourth Proportional to 54,178.26, 81,272.80 and 20,435.74

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Solution

The fourth proportional to 54,178.26, 81,272.80 and 20,435.74 is: 30,655.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,178.26 : 81,272.80 = 20,435.74 : x
  2. Step 2: Convert to fraction form
    54,178.26/81,272.80 = 20,435.74/x
  3. Step 3: Cross multiply
    54,178.26x = 81,272.80 × 20,435.74
  4. Step 4: Simplify right side
    54,178.26x = 1,660,869,809.87
  5. Step 5: Solve for x
    x = 1,660,869,809.87/54,178.26
  6. Step 6: Final answer
    x = 30,655.65

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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.