Finding the Fourth Proportional to 81,974,342.21, 122,943,382.97 and 23,669,369.12
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Solution
The fourth proportional to 81,974,342.21, 122,943,382.97 and 23,669,369.12 is: 35,498,818.70
Step by Step Solution
- Step 1: Write the proportion equation
81,974,342.21 : 122,943,382.97 = 23,669,369.12 : x - Step 2: Convert to fraction form
81,974,342.21/122,943,382.97 = 23,669,369.12/x - Step 3: Cross multiply
81,974,342.21x = 122,943,382.97 × 23,669,369.12 - Step 4: Simplify right side
81,974,342.21x = 2,909,992,311,645,388 - Step 5: Solve for x
x = 2,909,992,311,645,388/81,974,342.21 - Step 6: Final answer
x = 35,498,818.70
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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.