Home / 43,456.44-65,172.11-19,750.78

Finding the Fourth Proportional to 43,456.44, 65,172.11 and 19,750.78

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Solution

The fourth proportional to 43,456.44, 65,172.11 and 19,750.78 is: 29,620.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,456.44 : 65,172.11 = 19,750.78 : x
  2. Step 2: Convert to fraction form
    43,456.44/65,172.11 = 19,750.78/x
  3. Step 3: Cross multiply
    43,456.44x = 65,172.11 × 19,750.78
  4. Step 4: Simplify right side
    43,456.44x = 1,287,199,989.46
  5. Step 5: Solve for x
    x = 1,287,199,989.46/43,456.44
  6. Step 6: Final answer
    x = 29,620.46

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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.