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Finding the Fourth Proportional to 53,608, 80,401.04 and 20,316.60

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Solution

The fourth proportional to 53,608, 80,401.04 and 20,316.60 is: 30,470.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,608 : 80,401.04 = 20,316.60 : x
  2. Step 2: Convert to fraction form
    53,608/80,401.04 = 20,316.60/x
  3. Step 3: Cross multiply
    53,608x = 80,401.04 × 20,316.60
  4. Step 4: Simplify right side
    53,608x = 1,633,475,769.26
  5. Step 5: Solve for x
    x = 1,633,475,769.26/53,608
  6. Step 6: Final answer
    x = 30,470.75

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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.