Finding the Fourth Proportional to 91,478,887.91, 126,243,061.05 and 49,664,715.62
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Solution
The fourth proportional to 91,478,887.91, 126,243,061.05 and 49,664,715.62 is: 68,538,499.64
Step by Step Solution
- Step 1: Write the proportion equation
91,478,887.91 : 126,243,061.05 = 49,664,715.62 : x - Step 2: Convert to fraction form
91,478,887.91/126,243,061.05 = 49,664,715.62/x - Step 3: Cross multiply
91,478,887.91x = 126,243,061.05 × 49,664,715.62 - Step 4: Simplify right side
91,478,887.91x = 6,269,825,725,415,333 - Step 5: Solve for x
x = 6,269,825,725,415,333/91,478,887.91 - Step 6: Final answer
x = 68,538,499.64
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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.