Finding the Fourth Proportional to 75,428.42, 113,143.67 and 19,268.99
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Solution
The fourth proportional to 75,428.42, 113,143.67 and 19,268.99 is: 28,903.75
Step by Step Solution
- Step 1: Write the proportion equation
75,428.42 : 113,143.67 = 19,268.99 : x - Step 2: Convert to fraction form
75,428.42/113,143.67 = 19,268.99/x - Step 3: Cross multiply
75,428.42x = 113,143.67 × 19,268.99 - Step 4: Simplify right side
75,428.42x = 2,180,164,245.79 - Step 5: Solve for x
x = 2,180,164,245.79/75,428.42 - Step 6: Final answer
x = 28,903.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.