Home / 81,140.58-121,721.13-27,842.94

Finding the Fourth Proportional to 81,140.58, 121,721.13 and 27,842.94

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Solution

The fourth proportional to 81,140.58, 121,721.13 and 27,842.94 is: 41,767.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,140.58 : 121,721.13 = 27,842.94 : x
  2. Step 2: Convert to fraction form
    81,140.58/121,721.13 = 27,842.94/x
  3. Step 3: Cross multiply
    81,140.58x = 121,721.13 × 27,842.94
  4. Step 4: Simplify right side
    81,140.58x = 3,389,074,119.32
  5. Step 5: Solve for x
    x = 3,389,074,119.32/81,140.58
  6. Step 6: Final answer
    x = 41,767.93

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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.