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Finding the Fourth Proportional to 81,799.80, 122,699.72 and 29,202.44

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Solution

The fourth proportional to 81,799.80, 122,699.72 and 29,202.44 is: 43,803.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,799.80 : 122,699.72 = 29,202.44 : x
  2. Step 2: Convert to fraction form
    81,799.80/122,699.72 = 29,202.44/x
  3. Step 3: Cross multiply
    81,799.80x = 122,699.72 × 29,202.44
  4. Step 4: Simplify right side
    81,799.80x = 3,583,131,211.32
  5. Step 5: Solve for x
    x = 3,583,131,211.32/81,799.80
  6. Step 6: Final answer
    x = 43,803.67

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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.