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Finding the Fourth Proportional to 34,847.78, 48,074.45 and 20,692.40

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Solution

The fourth proportional to 34,847.78, 48,074.45 and 20,692.40 is: 28,546.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,847.78 : 48,074.45 = 20,692.40 : x
  2. Step 2: Convert to fraction form
    34,847.78/48,074.45 = 20,692.40/x
  3. Step 3: Cross multiply
    34,847.78x = 48,074.45 × 20,692.40
  4. Step 4: Simplify right side
    34,847.78x = 994,775,405.35
  5. Step 5: Solve for x
    x = 994,775,405.35/34,847.78
  6. Step 6: Final answer
    x = 28,546.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.