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Finding the Fourth Proportional to 40,518.48, 60,665.76 and 20,754.48

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Solution

The fourth proportional to 40,518.48, 60,665.76 and 20,754.48 is: 31,074.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,518.48 : 60,665.76 = 20,754.48 : x
  2. Step 2: Convert to fraction form
    40,518.48/60,665.76 = 20,754.48/x
  3. Step 3: Cross multiply
    40,518.48x = 60,665.76 × 20,754.48
  4. Step 4: Simplify right side
    40,518.48x = 1,259,086,302.60
  5. Step 5: Solve for x
    x = 1,259,086,302.60/40,518.48
  6. Step 6: Final answer
    x = 31,074.37

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1.5x scale

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.