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Finding the Fourth Proportional to 54,107.75, 81,136.08 and 31,624.88

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Solution

The fourth proportional to 54,107.75, 81,136.08 and 31,624.88 is: 47,422.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,107.75 : 81,136.08 = 31,624.88 : x
  2. Step 2: Convert to fraction form
    54,107.75/81,136.08 = 31,624.88/x
  3. Step 3: Cross multiply
    54,107.75x = 81,136.08 × 31,624.88
  4. Step 4: Simplify right side
    54,107.75x = 2,565,918,793.67
  5. Step 5: Solve for x
    x = 2,565,918,793.67/54,107.75
  6. Step 6: Final answer
    x = 47,422.39

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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.