Home / 53,805.28-80,704.80-20,528.71

Finding the Fourth Proportional to 53,805.28, 80,704.80 and 20,528.71

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Solution

The fourth proportional to 53,805.28, 80,704.80 and 20,528.71 is: 30,791.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,805.28 : 80,704.80 = 20,528.71 : x
  2. Step 2: Convert to fraction form
    53,805.28/80,704.80 = 20,528.71/x
  3. Step 3: Cross multiply
    53,805.28x = 80,704.80 × 20,528.71
  4. Step 4: Simplify right side
    53,805.28x = 1,656,765,434.81
  5. Step 5: Solve for x
    x = 1,656,765,434.81/53,805.28
  6. Step 6: Final answer
    x = 30,791.87

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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.