Finding the Fourth Proportional to 78,232,538.05, 107,961,319.55 and 48,880,891.70
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Solution
The fourth proportional to 78,232,538.05, 107,961,319.55 and 48,880,891.70 is: 67,455,891.11
Step by Step Solution
- Step 1: Write the proportion equation
78,232,538.05 : 107,961,319.55 = 48,880,891.70 : x - Step 2: Convert to fraction form
78,232,538.05/107,961,319.55 = 48,880,891.70/x - Step 3: Cross multiply
78,232,538.05x = 107,961,319.55 × 48,880,891.70 - Step 4: Simplify right side
78,232,538.05x = 5,277,245,568,425,183 - Step 5: Solve for x
x = 5,277,245,568,425,183/78,232,538.05 - Step 6: Final answer
x = 67,455,891.11
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.