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Finding the Fourth Proportional to 77,998.72, 116,997.99 and 25,408.12

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Solution

The fourth proportional to 77,998.72, 116,997.99 and 25,408.12 is: 38,112.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,998.72 : 116,997.99 = 25,408.12 : x
  2. Step 2: Convert to fraction form
    77,998.72/116,997.99 = 25,408.12/x
  3. Step 3: Cross multiply
    77,998.72x = 116,997.99 × 25,408.12
  4. Step 4: Simplify right side
    77,998.72x = 2,972,698,969.68
  5. Step 5: Solve for x
    x = 2,972,698,969.68/77,998.72
  6. Step 6: Final answer
    x = 38,112.15

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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.