Home / 81,571.33-122,342.37-21,600.19

Finding the Fourth Proportional to 81,571.33, 122,342.37 and 21,600.19

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Solution

The fourth proportional to 81,571.33, 122,342.37 and 21,600.19 is: 32,396.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,571.33 : 122,342.37 = 21,600.19 : x
  2. Step 2: Convert to fraction form
    81,571.33/122,342.37 = 21,600.19/x
  3. Step 3: Cross multiply
    81,571.33x = 122,342.37 × 21,600.19
  4. Step 4: Simplify right side
    81,571.33x = 2,642,618,437.05
  5. Step 5: Solve for x
    x = 2,642,618,437.05/81,571.33
  6. Step 6: Final answer
    x = 32,396.41

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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.