Finding the Fourth Proportional to 81,979,860.38, 122,967,830.40 and 26,647,625.84
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Solution
The fourth proportional to 81,979,860.38, 122,967,830.40 and 26,647,625.84 is: 39,970,801.61
Step by Step Solution
- Step 1: Write the proportion equation
81,979,860.38 : 122,967,830.40 = 26,647,625.84 : x - Step 2: Convert to fraction form
81,979,860.38/122,967,830.40 = 26,647,625.84/x - Step 3: Cross multiply
81,979,860.38x = 122,967,830.40 × 26,647,625.84 - Step 4: Simplify right side
81,979,860.38x = 3,276,800,734,855,777.50 - Step 5: Solve for x
x = 3,276,800,734,855,777.50/81,979,860.38 - Step 6: Final answer
x = 39,970,801.61
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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.