Home / 54,491.35-81,742.29-21,214.12

Finding the Fourth Proportional to 54,491.35, 81,742.29 and 21,214.12

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Solution

The fourth proportional to 54,491.35, 81,742.29 and 21,214.12 is: 31,823.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,491.35 : 81,742.29 = 21,214.12 : x
  2. Step 2: Convert to fraction form
    54,491.35/81,742.29 = 21,214.12/x
  3. Step 3: Cross multiply
    54,491.35x = 81,742.29 × 21,214.12
  4. Step 4: Simplify right side
    54,491.35x = 1,734,090,749.13
  5. Step 5: Solve for x
    x = 1,734,090,749.13/54,491.35
  6. Step 6: Final answer
    x = 31,823.23

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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.