Finding the Fourth Proportional to 91,288,021,838.84, 125,977,618,338.99 and 50,642,934,367.49
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Solution
The fourth proportional to 91,288,021,838.84, 125,977,618,338.99 and 50,642,934,367.49 is: 69,887,331,643.33
Step by Step Solution
- Step 1: Write the proportion equation
91,288,021,838.84 : 125,977,618,338.99 = 50,642,934,367.49 : x - Step 2: Convert to fraction form
91,288,021,838.84/125,977,618,338.99 = 50,642,934,367.49/x - Step 3: Cross multiply
91,288,021,838.84x = 125,977,618,338.99 × 50,642,934,367.49 - Step 4: Simplify right side
91,288,021,838.84x = 6,379,876,257,314,175,451,136 - Step 5: Solve for x
x = 6,379,876,257,314,175,451,136/91,288,021,838.84 - Step 6: Final answer
x = 69,887,331,643.33
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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.