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Finding the Fourth Proportional to 28,978,057.10, 43,467,085.65 and 15,541,129.10

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Solution

The fourth proportional to 28,978,057.10, 43,467,085.65 and 15,541,129.10 is: 23,311,693.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,978,057.10 : 43,467,085.65 = 15,541,129.10 : x
  2. Step 2: Convert to fraction form
    28,978,057.10/43,467,085.65 = 15,541,129.10/x
  3. Step 3: Cross multiply
    28,978,057.10x = 43,467,085.65 × 15,541,129.10
  4. Step 4: Simplify right side
    28,978,057.10x = 675,527,589,687,407.38
  5. Step 5: Solve for x
    x = 675,527,589,687,407.38/28,978,057.10
  6. Step 6: Final answer
    x = 23,311,693.65

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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.