Home / 54,541.72-81,779.08-21,223

Finding the Fourth Proportional to 54,541.72, 81,779.08 and 21,223

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Solution

The fourth proportional to 54,541.72, 81,779.08 and 21,223 is: 31,821.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,541.72 : 81,779.08 = 21,223 : x
  2. Step 2: Convert to fraction form
    54,541.72/81,779.08 = 21,223/x
  3. Step 3: Cross multiply
    54,541.72x = 81,779.08 × 21,223
  4. Step 4: Simplify right side
    54,541.72x = 1,735,597,414.84
  5. Step 5: Solve for x
    x = 1,735,597,414.84/54,541.72
  6. Step 6: Final answer
    x = 31,821.46

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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.