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Finding the Fourth Proportional to 81,354.60, 122,028.34 and 22,190.08

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Solution

The fourth proportional to 81,354.60, 122,028.34 and 22,190.08 is: 33,284.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,354.60 : 122,028.34 = 22,190.08 : x
  2. Step 2: Convert to fraction form
    81,354.60/122,028.34 = 22,190.08/x
  3. Step 3: Cross multiply
    81,354.60x = 122,028.34 × 22,190.08
  4. Step 4: Simplify right side
    81,354.60x = 2,707,818,099.91
  5. Step 5: Solve for x
    x = 2,707,818,099.91/81,354.60
  6. Step 6: Final answer
    x = 33,284.14

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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.