Home / 81,840.42-122,765.82-25,682.75

Finding the Fourth Proportional to 81,840.42, 122,765.82 and 25,682.75

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Solution

The fourth proportional to 81,840.42, 122,765.82 and 25,682.75 is: 38,525.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,840.42 : 122,765.82 = 25,682.75 : x
  2. Step 2: Convert to fraction form
    81,840.42/122,765.82 = 25,682.75/x
  3. Step 3: Cross multiply
    81,840.42x = 122,765.82 × 25,682.75
  4. Step 4: Simplify right side
    81,840.42x = 3,152,963,297.93
  5. Step 5: Solve for x
    x = 3,152,963,297.93/81,840.42
  6. Step 6: Final answer
    x = 38,525.75

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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.