Home / 74,108.76-111,174.06-21,511.38

Finding the Fourth Proportional to 74,108.76, 111,174.06 and 21,511.38

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Solution

The fourth proportional to 74,108.76, 111,174.06 and 21,511.38 is: 32,270.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,108.76 : 111,174.06 = 21,511.38 : x
  2. Step 2: Convert to fraction form
    74,108.76/111,174.06 = 21,511.38/x
  3. Step 3: Cross multiply
    74,108.76x = 111,174.06 × 21,511.38
  4. Step 4: Simplify right side
    74,108.76x = 2,391,507,450.80
  5. Step 5: Solve for x
    x = 2,391,507,450.80/74,108.76
  6. Step 6: Final answer
    x = 32,270.24

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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.