Home / 74,279.69-111,408.58-21,675.05

Finding the Fourth Proportional to 74,279.69, 111,408.58 and 21,675.05

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Solution

The fourth proportional to 74,279.69, 111,408.58 and 21,675.05 is: 32,509.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,279.69 : 111,408.58 = 21,675.05 : x
  2. Step 2: Convert to fraction form
    74,279.69/111,408.58 = 21,675.05/x
  3. Step 3: Cross multiply
    74,279.69x = 111,408.58 × 21,675.05
  4. Step 4: Simplify right side
    74,279.69x = 2,414,786,433.55
  5. Step 5: Solve for x
    x = 2,414,786,433.55/74,279.69
  6. Step 6: Final answer
    x = 32,509.38

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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.