Home / 54,157.48-81,015.90-45,785.32

Finding the Fourth Proportional to 54,157.48, 81,015.90 and 45,785.32

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Solution

The fourth proportional to 54,157.48, 81,015.90 and 45,785.32 is: 68,491.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,157.48 : 81,015.90 = 45,785.32 : x
  2. Step 2: Convert to fraction form
    54,157.48/81,015.90 = 45,785.32/x
  3. Step 3: Cross multiply
    54,157.48x = 81,015.90 × 45,785.32
  4. Step 4: Simplify right side
    54,157.48x = 3,709,338,906.59
  5. Step 5: Solve for x
    x = 3,709,338,906.59/54,157.48
  6. Step 6: Final answer
    x = 68,491.72

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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.