Home / 77,828.40-107,383.68-43,830

Finding the Fourth Proportional to 77,828.40, 107,383.68 and 43,830

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Solution

The fourth proportional to 77,828.40, 107,383.68 and 43,830 is: 60,474.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,828.40 : 107,383.68 = 43,830 : x
  2. Step 2: Convert to fraction form
    77,828.40/107,383.68 = 43,830/x
  3. Step 3: Cross multiply
    77,828.40x = 107,383.68 × 43,830
  4. Step 4: Simplify right side
    77,828.40x = 4,706,626,694.40
  5. Step 5: Solve for x
    x = 4,706,626,694.40/77,828.40
  6. Step 6: Final answer
    x = 60,474.41

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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.