Finding the Fourth Proportional to 86,467.68, 128,841.94 and 77,035.22
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Solution
The fourth proportional to 86,467.68, 128,841.94 and 77,035.22 is: 114,787.02
Step by Step Solution
- Step 1: Write the proportion equation
86,467.68 : 128,841.94 = 77,035.22 : x - Step 2: Convert to fraction form
86,467.68/128,841.94 = 77,035.22/x - Step 3: Cross multiply
86,467.68x = 128,841.94 × 77,035.22 - Step 4: Simplify right side
86,467.68x = 9,925,367,193.13 - Step 5: Solve for x
x = 9,925,367,193.13/86,467.68 - Step 6: Final answer
x = 114,787.02
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.