Finding the Fourth Proportional to 78,756,298.14, 108,676,600.11 and 49,378,239.66
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Solution
The fourth proportional to 78,756,298.14, 108,676,600.11 and 49,378,239.66 is: 68,137,524.65
Step by Step Solution
- Step 1: Write the proportion equation
78,756,298.14 : 108,676,600.11 = 49,378,239.66 : x - Step 2: Convert to fraction form
78,756,298.14/108,676,600.11 = 49,378,239.66/x - Step 3: Cross multiply
78,756,298.14x = 108,676,600.11 × 49,378,239.66 - Step 4: Simplify right side
78,756,298.14x = 5,366,259,205,665,562 - Step 5: Solve for x
x = 5,366,259,205,665,562/78,756,298.14 - Step 6: Final answer
x = 68,137,524.65
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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.