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Finding the Fourth Proportional to 28,978,048.40, 43,467,072.60 and 13,052,800.40

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Solution

The fourth proportional to 28,978,048.40, 43,467,072.60 and 13,052,800.40 is: 19,579,200.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,978,048.40 : 43,467,072.60 = 13,052,800.40 : x
  2. Step 2: Convert to fraction form
    28,978,048.40/43,467,072.60 = 13,052,800.40/x
  3. Step 3: Cross multiply
    28,978,048.40x = 43,467,072.60 × 13,052,800.40
  4. Step 4: Simplify right side
    28,978,048.40x = 567,367,022,620,109.12
  5. Step 5: Solve for x
    x = 567,367,022,620,109.12/28,978,048.40
  6. Step 6: Final answer
    x = 19,579,200.60

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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.