Home / 51,721.97-77,583.23-20,557.31

Finding the Fourth Proportional to 51,721.97, 77,583.23 and 20,557.31

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Solution

The fourth proportional to 51,721.97, 77,583.23 and 20,557.31 is: 30,836.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,721.97 : 77,583.23 = 20,557.31 : x
  2. Step 2: Convert to fraction form
    51,721.97/77,583.23 = 20,557.31/x
  3. Step 3: Cross multiply
    51,721.97x = 77,583.23 × 20,557.31
  4. Step 4: Simplify right side
    51,721.97x = 1,594,902,019.21
  5. Step 5: Solve for x
    x = 1,594,902,019.21/51,721.97
  6. Step 6: Final answer
    x = 30,836.07

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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.