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Finding the Fourth Proportional to 81,901.21, 122,851.87 and 22,736.89

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Solution

The fourth proportional to 81,901.21, 122,851.87 and 22,736.89 is: 34,105.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,901.21 : 122,851.87 = 22,736.89 : x
  2. Step 2: Convert to fraction form
    81,901.21/122,851.87 = 22,736.89/x
  3. Step 3: Cross multiply
    81,901.21x = 122,851.87 × 22,736.89
  4. Step 4: Simplify right side
    81,901.21x = 2,793,269,454.48
  5. Step 5: Solve for x
    x = 2,793,269,454.48/81,901.21
  6. Step 6: Final answer
    x = 34,105.35

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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.