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Finding the Fourth Proportional to 80,694, 121,060.44 and 25,290

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Solution

The fourth proportional to 80,694, 121,060.44 and 25,290 is: 37,941.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,694 : 121,060.44 = 25,290 : x
  2. Step 2: Convert to fraction form
    80,694/121,060.44 = 25,290/x
  3. Step 3: Cross multiply
    80,694x = 121,060.44 × 25,290
  4. Step 4: Simplify right side
    80,694x = 3,061,618,527.60
  5. Step 5: Solve for x
    x = 3,061,618,527.60/80,694
  6. Step 6: Final answer
    x = 37,941.09

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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.