Finding the Fourth Proportional to 87,771.31, 121,072.45 and 53,795.05
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Solution
The fourth proportional to 87,771.31, 121,072.45 and 53,795.05 is: 74,205.32
Step by Step Solution
- Step 1: Write the proportion equation
87,771.31 : 121,072.45 = 53,795.05 : x - Step 2: Convert to fraction form
87,771.31/121,072.45 = 53,795.05/x - Step 3: Cross multiply
87,771.31x = 121,072.45 × 53,795.05 - Step 4: Simplify right side
87,771.31x = 6,513,098,501.37 - Step 5: Solve for x
x = 6,513,098,501.37/87,771.31 - Step 6: Final answer
x = 74,205.32
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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.