Home / 54,152.55-81,210.20-20,869.85

Finding the Fourth Proportional to 54,152.55, 81,210.20 and 20,869.85

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Solution

The fourth proportional to 54,152.55, 81,210.20 and 20,869.85 is: 31,297.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,152.55 : 81,210.20 = 20,869.85 : x
  2. Step 2: Convert to fraction form
    54,152.55/81,210.20 = 20,869.85/x
  3. Step 3: Cross multiply
    54,152.55x = 81,210.20 × 20,869.85
  4. Step 4: Simplify right side
    54,152.55x = 1,694,844,791.15
  5. Step 5: Solve for x
    x = 1,694,844,791.15/54,152.55
  6. Step 6: Final answer
    x = 31,297.60

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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.