Home / 81,979.57-122,986.64-26,571.25

Finding the Fourth Proportional to 81,979.57, 122,986.64 and 26,571.25

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Solution

The fourth proportional to 81,979.57, 122,986.64 and 26,571.25 is: 39,862.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,979.57 : 122,986.64 = 26,571.25 : x
  2. Step 2: Convert to fraction form
    81,979.57/122,986.64 = 26,571.25/x
  3. Step 3: Cross multiply
    81,979.57x = 122,986.64 × 26,571.25
  4. Step 4: Simplify right side
    81,979.57x = 3,267,908,625.24
  5. Step 5: Solve for x
    x = 3,267,908,625.24/81,979.57
  6. Step 6: Final answer
    x = 39,862.48

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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.