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Finding the Fourth Proportional to 53,892,067.20, 80,888,839.20 and 28,351,406.40

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Solution

The fourth proportional to 53,892,067.20, 80,888,839.20 and 28,351,406.40 is: 42,553,801.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,892,067.20 : 80,888,839.20 = 28,351,406.40 : x
  2. Step 2: Convert to fraction form
    53,892,067.20/80,888,839.20 = 28,351,406.40/x
  3. Step 3: Cross multiply
    53,892,067.20x = 80,888,839.20 × 28,351,406.40
  4. Step 4: Simplify right side
    53,892,067.20x = 2,293,312,353,383,451
  5. Step 5: Solve for x
    x = 2,293,312,353,383,451/53,892,067.20
  6. Step 6: Final answer
    x = 42,553,801.93

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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.