Finding the Fourth Proportional to 87,173,309.48, 120,299,161.38 and 50,525,138.12
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Solution
The fourth proportional to 87,173,309.48, 120,299,161.38 and 50,525,138.12 is: 69,724,687.30
Step by Step Solution
- Step 1: Write the proportion equation
87,173,309.48 : 120,299,161.38 = 50,525,138.12 : x - Step 2: Convert to fraction form
87,173,309.48/120,299,161.38 = 50,525,138.12/x - Step 3: Cross multiply
87,173,309.48x = 120,299,161.38 × 50,525,138.12 - Step 4: Simplify right side
87,173,309.48x = 6,078,131,744,444,669 - Step 5: Solve for x
x = 6,078,131,744,444,669/87,173,309.48 - Step 6: Final answer
x = 69,724,687.30
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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.