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Finding the Fourth Proportional to 77,187.40, 115,764.90 and 21,770.44

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Solution

The fourth proportional to 77,187.40, 115,764.90 and 21,770.44 is: 32,651.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,187.40 : 115,764.90 = 21,770.44 : x
  2. Step 2: Convert to fraction form
    77,187.40/115,764.90 = 21,770.44/x
  3. Step 3: Cross multiply
    77,187.40x = 115,764.90 × 21,770.44
  4. Step 4: Simplify right side
    77,187.40x = 2,520,252,438.50
  5. Step 5: Solve for x
    x = 2,520,252,438.50/77,187.40
  6. Step 6: Final answer
    x = 32,651.09

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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.