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Finding the Fourth Proportional to 81,653.25, 122,479.88 and 26,249.25

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Solution

The fourth proportional to 81,653.25, 122,479.88 and 26,249.25 is: 39,373.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,653.25 : 122,479.88 = 26,249.25 : x
  2. Step 2: Convert to fraction form
    81,653.25/122,479.88 = 26,249.25/x
  3. Step 3: Cross multiply
    81,653.25x = 122,479.88 × 26,249.25
  4. Step 4: Simplify right side
    81,653.25x = 3,215,004,858.84
  5. Step 5: Solve for x
    x = 3,215,004,858.84/81,653.25
  6. Step 6: Final answer
    x = 39,373.88

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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.