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Finding the Fourth Proportional to 81,951,069.60, 122,926,604.40 and 41,136,400.80

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Solution

The fourth proportional to 81,951,069.60, 122,926,604.40 and 41,136,400.80 is: 61,704,601.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,951,069.60 : 122,926,604.40 = 41,136,400.80 : x
  2. Step 2: Convert to fraction form
    81,951,069.60/122,926,604.40 = 41,136,400.80/x
  3. Step 3: Cross multiply
    81,951,069.60x = 122,926,604.40 × 41,136,400.80
  4. Step 4: Simplify right side
    81,951,069.60x = 5,056,758,067,581,443
  5. Step 5: Solve for x
    x = 5,056,758,067,581,443/81,951,069.60
  6. Step 6: Final answer
    x = 61,704,601.20

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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.