Home / 54,286.08-81,401.60-19,220.80

Finding the Fourth Proportional to 54,286.08, 81,401.60 and 19,220.80

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Solution

The fourth proportional to 54,286.08, 81,401.60 and 19,220.80 is: 28,821.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,286.08 : 81,401.60 = 19,220.80 : x
  2. Step 2: Convert to fraction form
    54,286.08/81,401.60 = 19,220.80/x
  3. Step 3: Cross multiply
    54,286.08x = 81,401.60 × 19,220.80
  4. Step 4: Simplify right side
    54,286.08x = 1,564,603,873.28
  5. Step 5: Solve for x
    x = 1,564,603,873.28/54,286.08
  6. Step 6: Final answer
    x = 28,821.46

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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.