Home / 81,110.28-121,623.89-43,181.10

Finding the Fourth Proportional to 81,110.28, 121,623.89 and 43,181.10

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Solution

The fourth proportional to 81,110.28, 121,623.89 and 43,181.10 is: 64,749.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,110.28 : 121,623.89 = 43,181.10 : x
  2. Step 2: Convert to fraction form
    81,110.28/121,623.89 = 43,181.10/x
  3. Step 3: Cross multiply
    81,110.28x = 121,623.89 × 43,181.10
  4. Step 4: Simplify right side
    81,110.28x = 5,251,853,140.57
  5. Step 5: Solve for x
    x = 5,251,853,140.57/81,110.28
  6. Step 6: Final answer
    x = 64,749.54

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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.