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Finding the Fourth Proportional to 54,285.97, 81,408.94 and 18,738.24

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Solution

The fourth proportional to 54,285.97, 81,408.94 and 18,738.24 is: 28,100.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,285.97 : 81,408.94 = 18,738.24 : x
  2. Step 2: Convert to fraction form
    54,285.97/81,408.94 = 18,738.24/x
  3. Step 3: Cross multiply
    54,285.97x = 81,408.94 × 18,738.24
  4. Step 4: Simplify right side
    54,285.97x = 1,525,460,209.02
  5. Step 5: Solve for x
    x = 1,525,460,209.02/54,285.97
  6. Step 6: Final answer
    x = 28,100.45

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1.5x scale

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.