Finding the Fourth Proportional to 87,791.59, 121,153.95 and 49,558.78
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Solution
The fourth proportional to 87,791.59, 121,153.95 and 49,558.78 is: 68,391.99
Step by Step Solution
- Step 1: Write the proportion equation
87,791.59 : 121,153.95 = 49,558.78 : x - Step 2: Convert to fraction form
87,791.59/121,153.95 = 49,558.78/x - Step 3: Cross multiply
87,791.59x = 121,153.95 × 49,558.78 - Step 4: Simplify right side
87,791.59x = 6,004,241,954.18 - Step 5: Solve for x
x = 6,004,241,954.18/87,791.59 - Step 6: Final answer
x = 68,391.99
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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.