Finding the Fourth Proportional to 78,587,012.10, 107,664,596.82 and 75,641,611.08
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Solution
The fourth proportional to 78,587,012.10, 107,664,596.82 and 75,641,611.08 is: 103,629,382.80
Step by Step Solution
- Step 1: Write the proportion equation
78,587,012.10 : 107,664,596.82 = 75,641,611.08 : x - Step 2: Convert to fraction form
78,587,012.10/107,664,596.82 = 75,641,611.08/x - Step 3: Cross multiply
78,587,012.10x = 107,664,596.82 × 75,641,611.08 - Step 4: Simplify right side
78,587,012.10x = 8,143,923,559,743,444 - Step 5: Solve for x
x = 8,143,923,559,743,444/78,587,012.10 - Step 6: Final answer
x = 103,629,382.80
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.