Home / 78,828.83-108,786.09-43,021.14

Finding the Fourth Proportional to 78,828.83, 108,786.09 and 43,021.14

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Solution

The fourth proportional to 78,828.83, 108,786.09 and 43,021.14 is: 59,370.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,828.83 : 108,786.09 = 43,021.14 : x
  2. Step 2: Convert to fraction form
    78,828.83/108,786.09 = 43,021.14/x
  3. Step 3: Cross multiply
    78,828.83x = 108,786.09 × 43,021.14
  4. Step 4: Simplify right side
    78,828.83x = 4,680,101,607.94
  5. Step 5: Solve for x
    x = 4,680,101,607.94/78,828.83
  6. Step 6: Final answer
    x = 59,370.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.