Home / 54,247.20-81,212.40-38,695.20

Finding the Fourth Proportional to 54,247.20, 81,212.40 and 38,695.20

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Solution

The fourth proportional to 54,247.20, 81,212.40 and 38,695.20 is: 57,929.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,247.20 : 81,212.40 = 38,695.20 : x
  2. Step 2: Convert to fraction form
    54,247.20/81,212.40 = 38,695.20/x
  3. Step 3: Cross multiply
    54,247.20x = 81,212.40 × 38,695.20
  4. Step 4: Simplify right side
    54,247.20x = 3,142,530,060.48
  5. Step 5: Solve for x
    x = 3,142,530,060.48/54,247.20
  6. Step 6: Final answer
    x = 57,929.81

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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.