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Finding the Fourth Proportional to 73,676.76, 110,499.48 and 21,072.12

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Solution

The fourth proportional to 73,676.76, 110,499.48 and 21,072.12 is: 31,603.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,676.76 : 110,499.48 = 21,072.12 : x
  2. Step 2: Convert to fraction form
    73,676.76/110,499.48 = 21,072.12/x
  3. Step 3: Cross multiply
    73,676.76x = 110,499.48 × 21,072.12
  4. Step 4: Simplify right side
    73,676.76x = 2,328,458,302.50
  5. Step 5: Solve for x
    x = 2,328,458,302.50/73,676.76
  6. Step 6: Final answer
    x = 31,603.70

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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.