Home / 81,083.82-121,625.73-25,675.50

Finding the Fourth Proportional to 81,083.82, 121,625.73 and 25,675.50

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Solution

The fourth proportional to 81,083.82, 121,625.73 and 25,675.50 is: 38,513.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,083.82 : 121,625.73 = 25,675.50 : x
  2. Step 2: Convert to fraction form
    81,083.82/121,625.73 = 25,675.50/x
  3. Step 3: Cross multiply
    81,083.82x = 121,625.73 × 25,675.50
  4. Step 4: Simplify right side
    81,083.82x = 3,122,801,430.62
  5. Step 5: Solve for x
    x = 3,122,801,430.62/81,083.82
  6. Step 6: Final answer
    x = 38,513.25

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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.