Home / 53,828.78-80,743.56-20,539.88

Finding the Fourth Proportional to 53,828.78, 80,743.56 and 20,539.88

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Solution

The fourth proportional to 53,828.78, 80,743.56 and 20,539.88 is: 30,809.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,828.78 : 80,743.56 = 20,539.88 : x
  2. Step 2: Convert to fraction form
    53,828.78/80,743.56 = 20,539.88/x
  3. Step 3: Cross multiply
    53,828.78x = 80,743.56 × 20,539.88
  4. Step 4: Simplify right side
    53,828.78x = 1,658,463,033.17
  5. Step 5: Solve for x
    x = 1,658,463,033.17/53,828.78
  6. Step 6: Final answer
    x = 30,809.97

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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.