Finding the Fourth Proportional to 91,288,021,777.70, 125,977,618,253.98 and 50,642,934,306.12
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Solution
The fourth proportional to 91,288,021,777.70, 125,977,618,253.98 and 50,642,934,306.12 is: 69,887,331,558.28
Step by Step Solution
- Step 1: Write the proportion equation
91,288,021,777.70 : 125,977,618,253.98 = 50,642,934,306.12 : x - Step 2: Convert to fraction form
91,288,021,777.70/125,977,618,253.98 = 50,642,934,306.12/x - Step 3: Cross multiply
91,288,021,777.70x = 125,977,618,253.98 × 50,642,934,306.12 - Step 4: Simplify right side
91,288,021,777.70x = 6,379,876,245,277,772,873,728 - Step 5: Solve for x
x = 6,379,876,245,277,772,873,728/91,288,021,777.70 - Step 6: Final answer
x = 69,887,331,558.28
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1.5x scale
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.