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Finding the Fourth Proportional to 82,434.40, 123,651.60 and 20,104.90

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Solution

The fourth proportional to 82,434.40, 123,651.60 and 20,104.90 is: 30,157.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,434.40 : 123,651.60 = 20,104.90 : x
  2. Step 2: Convert to fraction form
    82,434.40/123,651.60 = 20,104.90/x
  3. Step 3: Cross multiply
    82,434.40x = 123,651.60 × 20,104.90
  4. Step 4: Simplify right side
    82,434.40x = 2,486,003,052.84
  5. Step 5: Solve for x
    x = 2,486,003,052.84/82,434.40
  6. Step 6: Final answer
    x = 30,157.35

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.