Finding the Fourth Proportional to 38,649,685.36, 53,336,738.64 and 21,247,151.80
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Solution
The fourth proportional to 38,649,685.36, 53,336,738.64 and 21,247,151.80 is: 29,321,164.50
Step by Step Solution
- Step 1: Write the proportion equation
38,649,685.36 : 53,336,738.64 = 21,247,151.80 : x - Step 2: Convert to fraction form
38,649,685.36/53,336,738.64 = 21,247,151.80/x - Step 3: Cross multiply
38,649,685.36x = 53,336,738.64 × 21,247,151.80 - Step 4: Simplify right side
38,649,685.36x = 1,133,253,782,401,005.50 - Step 5: Solve for x
x = 1,133,253,782,401,005.50/38,649,685.36 - Step 6: Final answer
x = 29,321,164.50
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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.