Home / 81,775.50-122,589.30-29,172.48

Finding the Fourth Proportional to 81,775.50, 122,589.30 and 29,172.48

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Solution

The fourth proportional to 81,775.50, 122,589.30 and 29,172.48 is: 43,732.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,775.50 : 122,589.30 = 29,172.48 : x
  2. Step 2: Convert to fraction form
    81,775.50/122,589.30 = 29,172.48/x
  3. Step 3: Cross multiply
    81,775.50x = 122,589.30 × 29,172.48
  4. Step 4: Simplify right side
    81,775.50x = 3,576,233,902.46
  5. Step 5: Solve for x
    x = 3,576,233,902.46/81,775.50
  6. Step 6: Final answer
    x = 43,732.34

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1.5x scale

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.