Finding the Fourth Proportional to 91,288,021,776.70, 125,977,618,252.60 and 50,642,934,305.12
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Solution
The fourth proportional to 91,288,021,776.70, 125,977,618,252.60 and 50,642,934,305.12 is: 69,887,331,556.90
Step by Step Solution
- Step 1: Write the proportion equation
91,288,021,776.70 : 125,977,618,252.60 = 50,642,934,305.12 : x - Step 2: Convert to fraction form
91,288,021,776.70/125,977,618,252.60 = 50,642,934,305.12/x - Step 3: Cross multiply
91,288,021,776.70x = 125,977,618,252.60 × 50,642,934,305.12 - Step 4: Simplify right side
91,288,021,776.70x = 6,379,876,245,081,908,314,112 - Step 5: Solve for x
x = 6,379,876,245,081,908,314,112/91,288,021,776.70 - Step 6: Final answer
x = 69,887,331,556.90
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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.