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Finding the Fourth Proportional to 81,197.39, 121,788.25 and 25,022.42

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Solution

The fourth proportional to 81,197.39, 121,788.25 and 25,022.42 is: 37,531.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,197.39 : 121,788.25 = 25,022.42 : x
  2. Step 2: Convert to fraction form
    81,197.39/121,788.25 = 25,022.42/x
  3. Step 3: Cross multiply
    81,197.39x = 121,788.25 × 25,022.42
  4. Step 4: Simplify right side
    81,197.39x = 3,047,436,650.93
  5. Step 5: Solve for x
    x = 3,047,436,650.93/81,197.39
  6. Step 6: Final answer
    x = 37,531.21

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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.