Home / 81,791.51-122,690.14-22,631.63

Finding the Fourth Proportional to 81,791.51, 122,690.14 and 22,631.63

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Solution

The fourth proportional to 81,791.51, 122,690.14 and 22,631.63 is: 33,948.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,791.51 : 122,690.14 = 22,631.63 : x
  2. Step 2: Convert to fraction form
    81,791.51/122,690.14 = 22,631.63/x
  3. Step 3: Cross multiply
    81,791.51x = 122,690.14 × 22,631.63
  4. Step 4: Simplify right side
    81,791.51x = 2,776,677,183.10
  5. Step 5: Solve for x
    x = 2,776,677,183.10/81,791.51
  6. Step 6: Final answer
    x = 33,948.23

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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.