Home / 54,391.96-81,588.66-21,113.92

Finding the Fourth Proportional to 54,391.96, 81,588.66 and 21,113.92

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Solution

The fourth proportional to 54,391.96, 81,588.66 and 21,113.92 is: 31,671.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,391.96 : 81,588.66 = 21,113.92 : x
  2. Step 2: Convert to fraction form
    54,391.96/81,588.66 = 21,113.92/x
  3. Step 3: Cross multiply
    54,391.96x = 81,588.66 × 21,113.92
  4. Step 4: Simplify right side
    54,391.96x = 1,722,656,440.15
  5. Step 5: Solve for x
    x = 1,722,656,440.15/54,391.96
  6. Step 6: Final answer
    x = 31,671.16

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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.