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Finding the Fourth Proportional to 25,978,445.80, 38,973,198.30 and 8,029,364.20

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Solution

The fourth proportional to 25,978,445.80, 38,973,198.30 and 8,029,364.20 is: 12,045,755.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,978,445.80 : 38,973,198.30 = 8,029,364.20 : x
  2. Step 2: Convert to fraction form
    25,978,445.80/38,973,198.30 = 8,029,364.20/x
  3. Step 3: Cross multiply
    25,978,445.80x = 38,973,198.30 × 8,029,364.20
  4. Step 4: Simplify right side
    25,978,445.80x = 312,930,003,189,520.81
  5. Step 5: Solve for x
    x = 312,930,003,189,520.81/25,978,445.80
  6. Step 6: Final answer
    x = 12,045,755.38

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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.