Finding the Fourth Proportional to 87,632.28, 120,790.87 and 68,478.77
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Solution
The fourth proportional to 87,632.28, 120,790.87 and 68,478.77 is: 94,389.99
Step by Step Solution
- Step 1: Write the proportion equation
87,632.28 : 120,790.87 = 68,478.77 : x - Step 2: Convert to fraction form
87,632.28/120,790.87 = 68,478.77/x - Step 3: Cross multiply
87,632.28x = 120,790.87 × 68,478.77 - Step 4: Simplify right side
87,632.28x = 8,271,610,204.83 - Step 5: Solve for x
x = 8,271,610,204.83/87,632.28 - Step 6: Final answer
x = 94,389.99
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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.