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Finding the Fourth Proportional to 54,311.10, 81,401.85 and 22,721.10

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Solution

The fourth proportional to 54,311.10, 81,401.85 and 22,721.10 is: 34,054.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,311.10 : 81,401.85 = 22,721.10 : x
  2. Step 2: Convert to fraction form
    54,311.10/81,401.85 = 22,721.10/x
  3. Step 3: Cross multiply
    54,311.10x = 81,401.85 × 22,721.10
  4. Step 4: Simplify right side
    54,311.10x = 1,849,539,574.04
  5. Step 5: Solve for x
    x = 1,849,539,574.04/54,311.10
  6. Step 6: Final answer
    x = 34,054.54

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1.5x scale

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.