Finding the Fourth Proportional to 91,278.21, 125,963.94 and 50,991.99
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Solution
The fourth proportional to 91,278.21, 125,963.94 and 50,991.99 is: 70,368.95
Step by Step Solution
- Step 1: Write the proportion equation
91,278.21 : 125,963.94 = 50,991.99 : x - Step 2: Convert to fraction form
91,278.21/125,963.94 = 50,991.99/x - Step 3: Cross multiply
91,278.21x = 125,963.94 × 50,991.99 - Step 4: Simplify right side
91,278.21x = 6,423,151,968.84 - Step 5: Solve for x
x = 6,423,151,968.84/91,278.21 - Step 6: Final answer
x = 70,368.95
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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.