Home / 74,172.78-111,270.33-21,575.34

Finding the Fourth Proportional to 74,172.78, 111,270.33 and 21,575.34

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Solution

The fourth proportional to 74,172.78, 111,270.33 and 21,575.34 is: 32,366.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,172.78 : 111,270.33 = 21,575.34 : x
  2. Step 2: Convert to fraction form
    74,172.78/111,270.33 = 21,575.34/x
  3. Step 3: Cross multiply
    74,172.78x = 111,270.33 × 21,575.34
  4. Step 4: Simplify right side
    74,172.78x = 2,400,695,201.66
  5. Step 5: Solve for x
    x = 2,400,695,201.66/74,172.78
  6. Step 6: Final answer
    x = 32,366.26

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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.