Home / 85,768.36-128,664.99-26,608.79

Finding the Fourth Proportional to 85,768.36, 128,664.99 and 26,608.79

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Solution

The fourth proportional to 85,768.36, 128,664.99 and 26,608.79 is: 39,917.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,768.36 : 128,664.99 = 26,608.79 : x
  2. Step 2: Convert to fraction form
    85,768.36/128,664.99 = 26,608.79/x
  3. Step 3: Cross multiply
    85,768.36x = 128,664.99 × 26,608.79
  4. Step 4: Simplify right side
    85,768.36x = 3,423,620,020.92
  5. Step 5: Solve for x
    x = 3,423,620,020.92/85,768.36
  6. Step 6: Final answer
    x = 39,917.05

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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.