Home / 81,721.03-122,578.21-22,555.18

Finding the Fourth Proportional to 81,721.03, 122,578.21 and 22,555.18

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Solution

The fourth proportional to 81,721.03, 122,578.21 and 22,555.18 is: 33,831.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,721.03 : 122,578.21 = 22,555.18 : x
  2. Step 2: Convert to fraction form
    81,721.03/122,578.21 = 22,555.18/x
  3. Step 3: Cross multiply
    81,721.03x = 122,578.21 × 22,555.18
  4. Step 4: Simplify right side
    81,721.03x = 2,764,773,590.63
  5. Step 5: Solve for x
    x = 2,764,773,590.63/81,721.03
  6. Step 6: Final answer
    x = 33,831.85

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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.