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Finding the Fourth Proportional to 28,978,057.60, 43,467,086.40 and 15,541,129.60

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Solution

The fourth proportional to 28,978,057.60, 43,467,086.40 and 15,541,129.60 is: 23,311,694.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,978,057.60 : 43,467,086.40 = 15,541,129.60 : x
  2. Step 2: Convert to fraction form
    28,978,057.60/43,467,086.40 = 15,541,129.60/x
  3. Step 3: Cross multiply
    28,978,057.60x = 43,467,086.40 × 15,541,129.60
  4. Step 4: Simplify right side
    28,978,057.60x = 675,527,623,076,797.38
  5. Step 5: Solve for x
    x = 675,527,623,076,797.38/28,978,057.60
  6. Step 6: Final answer
    x = 23,311,694.40

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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.