Finding the Fourth Proportional to 71,220,809.60, 106,943,188.80 and 40,987,721.60
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Solution
The fourth proportional to 71,220,809.60, 106,943,188.80 and 40,987,721.60 is: 61,546,023.90
Step by Step Solution
- Step 1: Write the proportion equation
71,220,809.60 : 106,943,188.80 = 40,987,721.60 : x - Step 2: Convert to fraction form
71,220,809.60/106,943,188.80 = 40,987,721.60/x - Step 3: Cross multiply
71,220,809.60x = 106,943,188.80 × 40,987,721.60 - Step 4: Simplify right side
71,220,809.60x = 4,383,357,649,550,638 - Step 5: Solve for x
x = 4,383,357,649,550,638/71,220,809.60 - Step 6: Final answer
x = 61,546,023.90
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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.