Finding the Fourth Proportional to 90,786,957.51, 125,324,659.49 and 61,034,860.69
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Solution
The fourth proportional to 90,786,957.51, 125,324,659.49 and 61,034,860.69 is: 84,254,097.09
Step by Step Solution
- Step 1: Write the proportion equation
90,786,957.51 : 125,324,659.49 = 61,034,860.69 : x - Step 2: Convert to fraction form
90,786,957.51/125,324,659.49 = 61,034,860.69/x - Step 3: Cross multiply
90,786,957.51x = 125,324,659.49 × 61,034,860.69 - Step 4: Simplify right side
90,786,957.51x = 7,649,173,132,993,836 - Step 5: Solve for x
x = 7,649,173,132,993,836/90,786,957.51 - Step 6: Final answer
x = 84,254,097.09
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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.