Finding the Fourth Proportional to 87,725.70, 121,059.77 and 51,436.08
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Solution
The fourth proportional to 87,725.70, 121,059.77 and 51,436.08 is: 70,980.79
Step by Step Solution
- Step 1: Write the proportion equation
87,725.70 : 121,059.77 = 51,436.08 : x - Step 2: Convert to fraction form
87,725.70/121,059.77 = 51,436.08/x - Step 3: Cross multiply
87,725.70x = 121,059.77 × 51,436.08 - Step 4: Simplify right side
87,725.70x = 6,226,839,757.32 - Step 5: Solve for x
x = 6,226,839,757.32/87,725.70 - Step 6: Final answer
x = 70,980.79
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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.