Finding the Fourth Proportional to 86,219,163.20, 129,378,511.20 and 32,371,918.40
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Solution
The fourth proportional to 86,219,163.20, 129,378,511.20 and 32,371,918.40 is: 48,576,562.93
Step by Step Solution
- Step 1: Write the proportion equation
86,219,163.20 : 129,378,511.20 = 32,371,918.40 : x - Step 2: Convert to fraction form
86,219,163.20/129,378,511.20 = 32,371,918.40/x - Step 3: Cross multiply
86,219,163.20x = 129,378,511.20 × 32,371,918.40 - Step 4: Simplify right side
86,219,163.20x = 4,188,230,607,279,886 - Step 5: Solve for x
x = 4,188,230,607,279,886/86,219,163.20 - Step 6: Final answer
x = 48,576,562.93
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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.