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Finding the Fourth Proportional to 28,978,051.30, 43,467,076.95 and 8,780,668.90

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Solution

The fourth proportional to 28,978,051.30, 43,467,076.95 and 8,780,668.90 is: 13,171,003.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,978,051.30 : 43,467,076.95 = 8,780,668.90 : x
  2. Step 2: Convert to fraction form
    28,978,051.30/43,467,076.95 = 8,780,668.90/x
  3. Step 3: Cross multiply
    28,978,051.30x = 43,467,076.95 × 8,780,668.90
  4. Step 4: Simplify right side
    28,978,051.30x = 381,670,010,748,771.88
  5. Step 5: Solve for x
    x = 381,670,010,748,771.88/28,978,051.30
  6. Step 6: Final answer
    x = 13,171,003.35

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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.