Finding the Fourth Proportional to 87,459.44, 120,689.76 and 49,732.88
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Solution
The fourth proportional to 87,459.44, 120,689.76 and 49,732.88 is: 68,628.95
Step by Step Solution
- Step 1: Write the proportion equation
87,459.44 : 120,689.76 = 49,732.88 : x - Step 2: Convert to fraction form
87,459.44/120,689.76 = 49,732.88/x - Step 3: Cross multiply
87,459.44x = 120,689.76 × 49,732.88 - Step 4: Simplify right side
87,459.44x = 6,002,249,351.31 - Step 5: Solve for x
x = 6,002,249,351.31/87,459.44 - Step 6: Final answer
x = 68,628.95
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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.