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Finding the Fourth Proportional to 61,251, 91,876.50 and 19,698

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Solution

The fourth proportional to 61,251, 91,876.50 and 19,698 is: 29,547

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,251 : 91,876.50 = 19,698 : x
  2. Step 2: Convert to fraction form
    61,251/91,876.50 = 19,698/x
  3. Step 3: Cross multiply
    61,251x = 91,876.50 × 19,698
  4. Step 4: Simplify right side
    61,251x = 1,809,783,297
  5. Step 5: Solve for x
    x = 1,809,783,297/61,251
  6. Step 6: Final answer
    x = 29,547

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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.