Finding the Fourth Proportional to 87,787.08, 121,137.39 and 49,543.20
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Solution
The fourth proportional to 87,787.08, 121,137.39 and 49,543.20 is: 68,364.66
Step by Step Solution
- Step 1: Write the proportion equation
87,787.08 : 121,137.39 = 49,543.20 : x - Step 2: Convert to fraction form
87,787.08/121,137.39 = 49,543.20/x - Step 3: Cross multiply
87,787.08x = 121,137.39 × 49,543.20 - Step 4: Simplify right side
87,787.08x = 6,001,533,940.25 - Step 5: Solve for x
x = 6,001,533,940.25/87,787.08 - Step 6: Final answer
x = 68,364.66
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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.