Home / 81,918.75-122,897.63-26,514.75

Finding the Fourth Proportional to 81,918.75, 122,897.63 and 26,514.75

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Solution

The fourth proportional to 81,918.75, 122,897.63 and 26,514.75 is: 39,778.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,918.75 : 122,897.63 = 26,514.75 : x
  2. Step 2: Convert to fraction form
    81,918.75/122,897.63 = 26,514.75/x
  3. Step 3: Cross multiply
    81,918.75x = 122,897.63 × 26,514.75
  4. Step 4: Simplify right side
    81,918.75x = 3,258,599,802.47
  5. Step 5: Solve for x
    x = 3,258,599,802.47/81,918.75
  6. Step 6: Final answer
    x = 39,778.44

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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.