Finding the Fourth Proportional to 87,688.77, 131,518.57 and 31,517.49
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Solution
The fourth proportional to 87,688.77, 131,518.57 and 31,517.49 is: 47,270.99
Step by Step Solution
- Step 1: Write the proportion equation
87,688.77 : 131,518.57 = 31,517.49 : x - Step 2: Convert to fraction form
87,688.77/131,518.57 = 31,517.49/x - Step 3: Cross multiply
87,688.77x = 131,518.57 × 31,517.49 - Step 4: Simplify right side
87,688.77x = 4,145,135,214.79 - Step 5: Solve for x
x = 4,145,135,214.79/87,688.77 - Step 6: Final answer
x = 47,270.99
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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.