Home / 81,304.43-121,926.34-27,981.51

Finding the Fourth Proportional to 81,304.43, 121,926.34 and 27,981.51

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Solution

The fourth proportional to 81,304.43, 121,926.34 and 27,981.51 is: 41,961.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,304.43 : 121,926.34 = 27,981.51 : x
  2. Step 2: Convert to fraction form
    81,304.43/121,926.34 = 27,981.51/x
  3. Step 3: Cross multiply
    81,304.43x = 121,926.34 × 27,981.51
  4. Step 4: Simplify right side
    81,304.43x = 3,411,682,962.07
  5. Step 5: Solve for x
    x = 3,411,682,962.07/81,304.43
  6. Step 6: Final answer
    x = 41,961.83

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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.