Finding the Fourth Proportional to 10,781,865.87, 16,177,849.19 and 5,313,979.94
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Solution
The fourth proportional to 10,781,865.87, 16,177,849.19 and 5,313,979.94 is: 7,973,459.05
Step by Step Solution
- Step 1: Write the proportion equation
10,781,865.87 : 16,177,849.19 = 5,313,979.94 : x - Step 2: Convert to fraction form
10,781,865.87/16,177,849.19 = 5,313,979.94/x - Step 3: Cross multiply
10,781,865.87x = 16,177,849.19 × 5,313,979.94 - Step 4: Simplify right side
10,781,865.87x = 85,968,765,960,546.09 - Step 5: Solve for x
x = 85,968,765,960,546.09/10,781,865.87 - Step 6: Final answer
x = 7,973,459.05
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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.