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Finding the Fourth Proportional to 61,481.20, 92,221.80 and 55,940.80

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Solution

The fourth proportional to 61,481.20, 92,221.80 and 55,940.80 is: 83,911.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,481.20 : 92,221.80 = 55,940.80 : x
  2. Step 2: Convert to fraction form
    61,481.20/92,221.80 = 55,940.80/x
  3. Step 3: Cross multiply
    61,481.20x = 92,221.80 × 55,940.80
  4. Step 4: Simplify right side
    61,481.20x = 5,158,961,269.44
  5. Step 5: Solve for x
    x = 5,158,961,269.44/61,481.20
  6. Step 6: Final answer
    x = 83,911.20

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1.5x scale

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.