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Finding the Fourth Proportional to 51,786,626.80, 77,679,940.20 and 17,704,937.20

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Solution

The fourth proportional to 51,786,626.80, 77,679,940.20 and 17,704,937.20 is: 26,557,405.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,786,626.80 : 77,679,940.20 = 17,704,937.20 : x
  2. Step 2: Convert to fraction form
    51,786,626.80/77,679,940.20 = 17,704,937.20/x
  3. Step 3: Cross multiply
    51,786,626.80x = 77,679,940.20 × 17,704,937.20
  4. Step 4: Simplify right side
    51,786,626.80x = 1,375,318,462,940,755.50
  5. Step 5: Solve for x
    x = 1,375,318,462,940,755.50/51,786,626.80
  6. Step 6: Final answer
    x = 26,557,405.80

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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.