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Finding the Fourth Proportional to 72,692.20, 108,965.40 and 33,277.60

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Solution

The fourth proportional to 72,692.20, 108,965.40 and 33,277.60 is: 49,883.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,692.20 : 108,965.40 = 33,277.60 : x
  2. Step 2: Convert to fraction form
    72,692.20/108,965.40 = 33,277.60/x
  3. Step 3: Cross multiply
    72,692.20x = 108,965.40 × 33,277.60
  4. Step 4: Simplify right side
    72,692.20x = 3,626,106,995.04
  5. Step 5: Solve for x
    x = 3,626,106,995.04/72,692.20
  6. Step 6: Final answer
    x = 49,883.03

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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.