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Finding the Fourth Proportional to 61,500, 92,250 and 19,947

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Solution

The fourth proportional to 61,500, 92,250 and 19,947 is: 29,920.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,500 : 92,250 = 19,947 : x
  2. Step 2: Convert to fraction form
    61,500/92,250 = 19,947/x
  3. Step 3: Cross multiply
    61,500x = 92,250 × 19,947
  4. Step 4: Simplify right side
    61,500x = 1,840,110,750
  5. Step 5: Solve for x
    x = 1,840,110,750/61,500
  6. Step 6: Final answer
    x = 29,920.50

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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.