Finding the Fourth Proportional to 81,791,620.80, 122,583,232.80 and 43,471,492.80
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Solution
The fourth proportional to 81,791,620.80, 122,583,232.80 and 43,471,492.80 is: 65,151,858.71
Step by Step Solution
- Step 1: Write the proportion equation
81,791,620.80 : 122,583,232.80 = 43,471,492.80 : x - Step 2: Convert to fraction form
81,791,620.80/122,583,232.80 = 43,471,492.80/x - Step 3: Cross multiply
81,791,620.80x = 122,583,232.80 × 43,471,492.80 - Step 4: Simplify right side
81,791,620.80x = 5,328,876,122,065,923 - Step 5: Solve for x
x = 5,328,876,122,065,923/81,791,620.80 - Step 6: Final answer
x = 65,151,858.71
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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.