Finding the Fourth Proportional to 71,202.12, 106,709.75 and 52,394.09
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Solution
The fourth proportional to 71,202.12, 106,709.75 and 52,394.09 is: 78,522.38
Step by Step Solution
- Step 1: Write the proportion equation
71,202.12 : 106,709.75 = 52,394.09 : x - Step 2: Convert to fraction form
71,202.12/106,709.75 = 52,394.09/x - Step 3: Cross multiply
71,202.12x = 106,709.75 × 52,394.09 - Step 4: Simplify right side
71,202.12x = 5,590,959,978.60 - Step 5: Solve for x
x = 5,590,959,978.60/71,202.12 - Step 6: Final answer
x = 78,522.38
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.