Home / 53,721.09-80,618.65-18,660.74

Finding the Fourth Proportional to 53,721.09, 80,618.65 and 18,660.74

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Solution

The fourth proportional to 53,721.09, 80,618.65 and 18,660.74 is: 28,003.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,721.09 : 80,618.65 = 18,660.74 : x
  2. Step 2: Convert to fraction form
    53,721.09/80,618.65 = 18,660.74/x
  3. Step 3: Cross multiply
    53,721.09x = 80,618.65 × 18,660.74
  4. Step 4: Simplify right side
    53,721.09x = 1,504,403,666.80
  5. Step 5: Solve for x
    x = 1,504,403,666.80/53,721.09
  6. Step 6: Final answer
    x = 28,003.97

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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.