Finding the Fourth Proportional to 20,864,749.16, 31,293,766.62 and 5,715,138.92
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Solution
The fourth proportional to 20,864,749.16, 31,293,766.62 and 5,715,138.92 is: 8,571,788.82
Step by Step Solution
- Step 1: Write the proportion equation
20,864,749.16 : 31,293,766.62 = 5,715,138.92 : x - Step 2: Convert to fraction form
20,864,749.16/31,293,766.62 = 5,715,138.92/x - Step 3: Cross multiply
20,864,749.16x = 31,293,766.62 × 5,715,138.92 - Step 4: Simplify right side
20,864,749.16x = 178,848,223,563,358.84 - Step 5: Solve for x
x = 178,848,223,563,358.84/20,864,749.16 - Step 6: Final answer
x = 8,571,788.82
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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.