Finding the Fourth Proportional to 39,921,286.41, 55,091,336.67 and 21,586,528.17
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Solution
The fourth proportional to 39,921,286.41, 55,091,336.67 and 21,586,528.17 is: 29,789,388.02
Step by Step Solution
- Step 1: Write the proportion equation
39,921,286.41 : 55,091,336.67 = 21,586,528.17 : x - Step 2: Convert to fraction form
39,921,286.41/55,091,336.67 = 21,586,528.17/x - Step 3: Cross multiply
39,921,286.41x = 55,091,336.67 × 21,586,528.17 - Step 4: Simplify right side
39,921,286.41x = 1,189,230,690,949,909.25 - Step 5: Solve for x
x = 1,189,230,690,949,909.25/39,921,286.41 - Step 6: Final answer
x = 29,789,388.02
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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.