Home / 54,145.74-81,232.44-20,856.87

Finding the Fourth Proportional to 54,145.74, 81,232.44 and 20,856.87

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Solution

The fourth proportional to 54,145.74, 81,232.44 and 20,856.87 is: 31,290.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,145.74 : 81,232.44 = 20,856.87 : x
  2. Step 2: Convert to fraction form
    54,145.74/81,232.44 = 20,856.87/x
  3. Step 3: Cross multiply
    54,145.74x = 81,232.44 × 20,856.87
  4. Step 4: Simplify right side
    54,145.74x = 1,694,254,440.86
  5. Step 5: Solve for x
    x = 1,694,254,440.86/54,145.74
  6. Step 6: Final answer
    x = 31,290.63

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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.