Home / 53,685.63-80,517.30-20,394.03

Finding the Fourth Proportional to 53,685.63, 80,517.30 and 20,394.03

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Solution

The fourth proportional to 53,685.63, 80,517.30 and 20,394.03 is: 30,586.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,685.63 : 80,517.30 = 20,394.03 : x
  2. Step 2: Convert to fraction form
    53,685.63/80,517.30 = 20,394.03/x
  3. Step 3: Cross multiply
    53,685.63x = 80,517.30 × 20,394.03
  4. Step 4: Simplify right side
    53,685.63x = 1,642,072,231.72
  5. Step 5: Solve for x
    x = 1,642,072,231.72/53,685.63
  6. Step 6: Final answer
    x = 30,586.81

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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.