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Finding the Fourth Proportional to 54,560.58, 81,842.52 and 21,279.30

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Solution

The fourth proportional to 54,560.58, 81,842.52 and 21,279.30 is: 31,919.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,560.58 : 81,842.52 = 21,279.30 : x
  2. Step 2: Convert to fraction form
    54,560.58/81,842.52 = 21,279.30/x
  3. Step 3: Cross multiply
    54,560.58x = 81,842.52 × 21,279.30
  4. Step 4: Simplify right side
    54,560.58x = 1,741,551,535.84
  5. Step 5: Solve for x
    x = 1,741,551,535.84/54,560.58
  6. Step 6: Final answer
    x = 31,919.59

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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.