Home / 54,603.75-81,905.35-21,327.18

Finding the Fourth Proportional to 54,603.75, 81,905.35 and 21,327.18

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Solution

The fourth proportional to 54,603.75, 81,905.35 and 21,327.18 is: 31,990.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,603.75 : 81,905.35 = 21,327.18 : x
  2. Step 2: Convert to fraction form
    54,603.75/81,905.35 = 21,327.18/x
  3. Step 3: Cross multiply
    54,603.75x = 81,905.35 × 21,327.18
  4. Step 4: Simplify right side
    54,603.75x = 1,746,810,142.41
  5. Step 5: Solve for x
    x = 1,746,810,142.41/54,603.75
  6. Step 6: Final answer
    x = 31,990.66

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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.