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Finding the Fourth Proportional to 77,745.78, 107,294.60 and 43,757.52

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Solution

The fourth proportional to 77,745.78, 107,294.60 and 43,757.52 is: 60,388.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,745.78 : 107,294.60 = 43,757.52 : x
  2. Step 2: Convert to fraction form
    77,745.78/107,294.60 = 43,757.52/x
  3. Step 3: Cross multiply
    77,745.78x = 107,294.60 × 43,757.52
  4. Step 4: Simplify right side
    77,745.78x = 4,694,945,386.60
  5. Step 5: Solve for x
    x = 4,694,945,386.60/77,745.78
  6. Step 6: Final answer
    x = 60,388.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.