Home / 81,204.35-121,813.31-21,232.70

Finding the Fourth Proportional to 81,204.35, 121,813.31 and 21,232.70

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Solution

The fourth proportional to 81,204.35, 121,813.31 and 21,232.70 is: 31,850.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,204.35 : 121,813.31 = 21,232.70 : x
  2. Step 2: Convert to fraction form
    81,204.35/121,813.31 = 21,232.70/x
  3. Step 3: Cross multiply
    81,204.35x = 121,813.31 × 21,232.70
  4. Step 4: Simplify right side
    81,204.35x = 2,586,426,053.25
  5. Step 5: Solve for x
    x = 2,586,426,053.25/81,204.35
  6. Step 6: Final answer
    x = 31,850.83

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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.