Home / 54,408.32-81,603.84-21,143.60

Finding the Fourth Proportional to 54,408.32, 81,603.84 and 21,143.60

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Solution

The fourth proportional to 54,408.32, 81,603.84 and 21,143.60 is: 31,712.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,408.32 : 81,603.84 = 21,143.60 : x
  2. Step 2: Convert to fraction form
    54,408.32/81,603.84 = 21,143.60/x
  3. Step 3: Cross multiply
    54,408.32x = 81,603.84 × 21,143.60
  4. Step 4: Simplify right side
    54,408.32x = 1,725,398,951.42
  5. Step 5: Solve for x
    x = 1,725,398,951.42/54,408.32
  6. Step 6: Final answer
    x = 31,712.04

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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.