Finding the Fourth Proportional to 86,660,143.08, 129,988,902.42 and 21,081,898.32
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Solution
The fourth proportional to 86,660,143.08, 129,988,902.42 and 21,081,898.32 is: 31,622,528.26
Step by Step Solution
- Step 1: Write the proportion equation
86,660,143.08 : 129,988,902.42 = 21,081,898.32 : x - Step 2: Convert to fraction form
86,660,143.08/129,988,902.42 = 21,081,898.32/x - Step 3: Cross multiply
86,660,143.08x = 129,988,902.42 × 21,081,898.32 - Step 4: Simplify right side
86,660,143.08x = 2,740,412,823,546,842 - Step 5: Solve for x
x = 2,740,412,823,546,842/86,660,143.08 - Step 6: Final answer
x = 31,622,528.26
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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.