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Finding the Fourth Proportional to 36,620,361.60, 54,955,425.60 and 20,446,281.60

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Solution

The fourth proportional to 36,620,361.60, 54,955,425.60 and 20,446,281.60 is: 30,683,315.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,620,361.60 : 54,955,425.60 = 20,446,281.60 : x
  2. Step 2: Convert to fraction form
    36,620,361.60/54,955,425.60 = 20,446,281.60/x
  3. Step 3: Cross multiply
    36,620,361.60x = 54,955,425.60 × 20,446,281.60
  4. Step 4: Simplify right side
    36,620,361.60x = 1,123,634,107,265,449.12
  5. Step 5: Solve for x
    x = 1,123,634,107,265,449.12/36,620,361.60
  6. Step 6: Final answer
    x = 30,683,315.46

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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.