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Finding the Fourth Proportional to 81,989.81, 122,984.85 and 22,825.49

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Solution

The fourth proportional to 81,989.81, 122,984.85 and 22,825.49 is: 34,238.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,989.81 : 122,984.85 = 22,825.49 : x
  2. Step 2: Convert to fraction form
    81,989.81/122,984.85 = 22,825.49/x
  3. Step 3: Cross multiply
    81,989.81x = 122,984.85 × 22,825.49
  4. Step 4: Simplify right side
    81,989.81x = 2,807,188,848.90
  5. Step 5: Solve for x
    x = 2,807,188,848.90/81,989.81
  6. Step 6: Final answer
    x = 34,238.27

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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.