Home / 81,790.41-122,685.43-25,634.80

Finding the Fourth Proportional to 81,790.41, 122,685.43 and 25,634.80

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Solution

The fourth proportional to 81,790.41, 122,685.43 and 25,634.80 is: 38,452.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,790.41 : 122,685.43 = 25,634.80 : x
  2. Step 2: Convert to fraction form
    81,790.41/122,685.43 = 25,634.80/x
  3. Step 3: Cross multiply
    81,790.41x = 122,685.43 × 25,634.80
  4. Step 4: Simplify right side
    81,790.41x = 3,145,016,090.16
  5. Step 5: Solve for x
    x = 3,145,016,090.16/81,790.41
  6. Step 6: Final answer
    x = 38,452.14

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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.