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Finding the Fourth Proportional to 54,450.98, 81,697.59 and 21,194.40

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Solution

The fourth proportional to 54,450.98, 81,697.59 and 21,194.40 is: 31,799.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,450.98 : 81,697.59 = 21,194.40 : x
  2. Step 2: Convert to fraction form
    54,450.98/81,697.59 = 21,194.40/x
  3. Step 3: Cross multiply
    54,450.98x = 81,697.59 × 21,194.40
  4. Step 4: Simplify right side
    54,450.98x = 1,731,531,401.50
  5. Step 5: Solve for x
    x = 1,731,531,401.50/54,450.98
  6. Step 6: Final answer
    x = 31,799.82

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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.