Home / 81,026.51-121,456.68-31,093.20

Finding the Fourth Proportional to 81,026.51, 121,456.68 and 31,093.20

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Solution

The fourth proportional to 81,026.51, 121,456.68 and 31,093.20 is: 46,607.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,026.51 : 121,456.68 = 31,093.20 : x
  2. Step 2: Convert to fraction form
    81,026.51/121,456.68 = 31,093.20/x
  3. Step 3: Cross multiply
    81,026.51x = 121,456.68 × 31,093.20
  4. Step 4: Simplify right side
    81,026.51x = 3,776,476,842.58
  5. Step 5: Solve for x
    x = 3,776,476,842.58/81,026.51
  6. Step 6: Final answer
    x = 46,607.92

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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.