Finding the Fourth Proportional to 87,907.94, 121,305.74 and 49,670.82
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Solution
The fourth proportional to 87,907.94, 121,305.74 and 49,670.82 is: 68,541.65
Step by Step Solution
- Step 1: Write the proportion equation
87,907.94 : 121,305.74 = 49,670.82 : x - Step 2: Convert to fraction form
87,907.94/121,305.74 = 49,670.82/x - Step 3: Cross multiply
87,907.94x = 121,305.74 × 49,670.82 - Step 4: Simplify right side
87,907.94x = 6,025,355,576.51 - Step 5: Solve for x
x = 6,025,355,576.51/87,907.94 - Step 6: Final answer
x = 68,541.65
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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.