Finding the Fourth Proportional to 78,888,163.10, 118,276,257.45 and 30,347,260.70
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Solution
The fourth proportional to 78,888,163.10, 118,276,257.45 and 30,347,260.70 is: 45,499,353.49
Step by Step Solution
- Step 1: Write the proportion equation
78,888,163.10 : 118,276,257.45 = 30,347,260.70 : x - Step 2: Convert to fraction form
78,888,163.10/118,276,257.45 = 30,347,260.70/x - Step 3: Cross multiply
78,888,163.10x = 118,276,257.45 × 30,347,260.70 - Step 4: Simplify right side
78,888,163.10x = 3,589,360,419,455,467 - Step 5: Solve for x
x = 3,589,360,419,455,467/78,888,163.10 - Step 6: Final answer
x = 45,499,353.49
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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.