Home / 87,921.05-131,879.75-21,361.52

Finding the Fourth Proportional to 87,921.05, 131,879.75 and 21,361.52

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Solution

The fourth proportional to 87,921.05, 131,879.75 and 21,361.52 is: 32,041.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,921.05 : 131,879.75 = 21,361.52 : x
  2. Step 2: Convert to fraction form
    87,921.05/131,879.75 = 21,361.52/x
  3. Step 3: Cross multiply
    87,921.05x = 131,879.75 × 21,361.52
  4. Step 4: Simplify right side
    87,921.05x = 2,817,152,140.11
  5. Step 5: Solve for x
    x = 2,817,152,140.11/87,921.05
  6. Step 6: Final answer
    x = 32,041.84

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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.