Home / 81,971.76-122,945.40-22,801.32

Finding the Fourth Proportional to 81,971.76, 122,945.40 and 22,801.32

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Solution

The fourth proportional to 81,971.76, 122,945.40 and 22,801.32 is: 34,198.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,971.76 : 122,945.40 = 22,801.32 : x
  2. Step 2: Convert to fraction form
    81,971.76/122,945.40 = 22,801.32/x
  3. Step 3: Cross multiply
    81,971.76x = 122,945.40 × 22,801.32
  4. Step 4: Simplify right side
    81,971.76x = 2,803,317,407.93
  5. Step 5: Solve for x
    x = 2,803,317,407.93/81,971.76
  6. Step 6: Final answer
    x = 34,198.58

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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.