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Finding the Fourth Proportional to 40,497.81, 60,765.18 and 20,790.22

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Solution

The fourth proportional to 40,497.81, 60,765.18 and 20,790.22 is: 31,194.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,497.81 : 60,765.18 = 20,790.22 : x
  2. Step 2: Convert to fraction form
    40,497.81/60,765.18 = 20,790.22/x
  3. Step 3: Cross multiply
    40,497.81x = 60,765.18 × 20,790.22
  4. Step 4: Simplify right side
    40,497.81x = 1,263,321,460.54
  5. Step 5: Solve for x
    x = 1,263,321,460.54/40,497.81
  6. Step 6: Final answer
    x = 31,194.81

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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.