Home / 54,145.75-81,060.25-31,587.45

Finding the Fourth Proportional to 54,145.75, 81,060.25 and 31,587.45

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Solution

The fourth proportional to 54,145.75, 81,060.25 and 31,587.45 is: 47,288.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,145.75 : 81,060.25 = 31,587.45 : x
  2. Step 2: Convert to fraction form
    54,145.75/81,060.25 = 31,587.45/x
  3. Step 3: Cross multiply
    54,145.75x = 81,060.25 × 31,587.45
  4. Step 4: Simplify right side
    54,145.75x = 2,560,486,593.86
  5. Step 5: Solve for x
    x = 2,560,486,593.86/54,145.75
  6. Step 6: Final answer
    x = 47,288.78

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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.