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Finding the Fourth Proportional to 34,679,620.80, 52,019,431.20 and 21,074,731.20

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Solution

The fourth proportional to 34,679,620.80, 52,019,431.20 and 21,074,731.20 is: 31,612,096.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,679,620.80 : 52,019,431.20 = 21,074,731.20 : x
  2. Step 2: Convert to fraction form
    34,679,620.80/52,019,431.20 = 21,074,731.20/x
  3. Step 3: Cross multiply
    34,679,620.80x = 52,019,431.20 × 21,074,731.20
  4. Step 4: Simplify right side
    34,679,620.80x = 1,096,295,529,716,893.50
  5. Step 5: Solve for x
    x = 1,096,295,529,716,893.50/34,679,620.80
  6. Step 6: Final answer
    x = 31,612,096.80

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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.