Finding the Fourth Proportional to 86,660,146.30, 129,988,907.26 and 21,081,901.54
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Solution
The fourth proportional to 86,660,146.30, 129,988,907.26 and 21,081,901.54 is: 31,622,533.09
Step by Step Solution
- Step 1: Write the proportion equation
86,660,146.30 : 129,988,907.26 = 21,081,901.54 : x - Step 2: Convert to fraction form
86,660,146.30/129,988,907.26 = 21,081,901.54/x - Step 3: Cross multiply
86,660,146.30x = 129,988,907.26 × 21,081,901.54 - Step 4: Simplify right side
86,660,146.30x = 2,740,413,344,147,511 - Step 5: Solve for x
x = 2,740,413,344,147,511/86,660,146.30 - Step 6: Final answer
x = 31,622,533.09
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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.