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Finding the Fourth Proportional to 28,978,552.80, 43,418,062.80 and 15,311,455.20

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Solution

The fourth proportional to 28,978,552.80, 43,418,062.80 and 15,311,455.20 is: 22,940,887.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,978,552.80 : 43,418,062.80 = 15,311,455.20 : x
  2. Step 2: Convert to fraction form
    28,978,552.80/43,418,062.80 = 15,311,455.20/x
  3. Step 3: Cross multiply
    28,978,552.80x = 43,418,062.80 × 15,311,455.20
  4. Step 4: Simplify right side
    28,978,552.80x = 664,793,723,432,986.50
  5. Step 5: Solve for x
    x = 664,793,723,432,986.50/28,978,552.80
  6. Step 6: Final answer
    x = 22,940,887.63

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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.