Finding the Fourth Proportional to 87,989,721.48, 131,976,829.20 and 39,454,548.96
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Solution
The fourth proportional to 87,989,721.48, 131,976,829.20 and 39,454,548.96 is: 59,178,346.99
Step by Step Solution
- Step 1: Write the proportion equation
87,989,721.48 : 131,976,829.20 = 39,454,548.96 : x - Step 2: Convert to fraction form
87,989,721.48/131,976,829.20 = 39,454,548.96/x - Step 3: Cross multiply
87,989,721.48x = 131,976,829.20 × 39,454,548.96 - Step 4: Simplify right side
87,989,721.48x = 5,207,086,269,256,958 - Step 5: Solve for x
x = 5,207,086,269,256,958/87,989,721.48 - Step 6: Final answer
x = 59,178,346.99
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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.