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Finding the Fourth Proportional to 22,419,907.80, 33,629,861.70 and 20,506,720.20

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Solution

The fourth proportional to 22,419,907.80, 33,629,861.70 and 20,506,720.20 is: 30,760,080.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,419,907.80 : 33,629,861.70 = 20,506,720.20 : x
  2. Step 2: Convert to fraction form
    22,419,907.80/33,629,861.70 = 20,506,720.20/x
  3. Step 3: Cross multiply
    22,419,907.80x = 33,629,861.70 × 20,506,720.20
  4. Step 4: Simplify right side
    22,419,907.80x = 689,638,164,246,596.38
  5. Step 5: Solve for x
    x = 689,638,164,246,596.38/22,419,907.80
  6. Step 6: Final answer
    x = 30,760,080.30

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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.