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Finding the Fourth Proportional to 80,705.75, 121,078.08 and 25,301.75

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Solution

The fourth proportional to 80,705.75, 121,078.08 and 25,301.75 is: 37,958.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,705.75 : 121,078.08 = 25,301.75 : x
  2. Step 2: Convert to fraction form
    80,705.75/121,078.08 = 25,301.75/x
  3. Step 3: Cross multiply
    80,705.75x = 121,078.08 × 25,301.75
  4. Step 4: Simplify right side
    80,705.75x = 3,063,487,310.64
  5. Step 5: Solve for x
    x = 3,063,487,310.64/80,705.75
  6. Step 6: Final answer
    x = 37,958.72

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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.