Home / 54,022.12-81,046.14-20,742.46

Finding the Fourth Proportional to 54,022.12, 81,046.14 and 20,742.46

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Solution

The fourth proportional to 54,022.12, 81,046.14 and 20,742.46 is: 31,118.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,022.12 : 81,046.14 = 20,742.46 : x
  2. Step 2: Convert to fraction form
    54,022.12/81,046.14 = 20,742.46/x
  3. Step 3: Cross multiply
    54,022.12x = 81,046.14 × 20,742.46
  4. Step 4: Simplify right side
    54,022.12x = 1,681,096,317.10
  5. Step 5: Solve for x
    x = 1,681,096,317.10/54,022.12
  6. Step 6: Final answer
    x = 31,118.67

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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.