Finding the Fourth Proportional to 77,136.05, 106,416.41 and 50,268.75
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Solution
The fourth proportional to 77,136.05, 106,416.41 and 50,268.75 is: 69,350.45
Step by Step Solution
- Step 1: Write the proportion equation
77,136.05 : 106,416.41 = 50,268.75 : x - Step 2: Convert to fraction form
77,136.05/106,416.41 = 50,268.75/x - Step 3: Cross multiply
77,136.05x = 106,416.41 × 50,268.75 - Step 4: Simplify right side
77,136.05x = 5,349,419,658.84 - Step 5: Solve for x
x = 5,349,419,658.84/77,136.05 - Step 6: Final answer
x = 69,350.45
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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.