Home / 81,033.51-121,467.24-31,100.19

Finding the Fourth Proportional to 81,033.51, 121,467.24 and 31,100.19

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Solution

The fourth proportional to 81,033.51, 121,467.24 and 31,100.19 is: 46,618.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,033.51 : 121,467.24 = 31,100.19 : x
  2. Step 2: Convert to fraction form
    81,033.51/121,467.24 = 31,100.19/x
  3. Step 3: Cross multiply
    81,033.51x = 121,467.24 × 31,100.19
  4. Step 4: Simplify right side
    81,033.51x = 3,777,654,242.78
  5. Step 5: Solve for x
    x = 3,777,654,242.78/81,033.51
  6. Step 6: Final answer
    x = 46,618.42

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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.