Finding the Fourth Proportional to 75,825.09, 113,807.97 and 38,411.60
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Solution
The fourth proportional to 75,825.09, 113,807.97 and 38,411.60 is: 57,653.02
Step by Step Solution
- Step 1: Write the proportion equation
75,825.09 : 113,807.97 = 38,411.60 : x - Step 2: Convert to fraction form
75,825.09/113,807.97 = 38,411.60/x - Step 3: Cross multiply
75,825.09x = 113,807.97 × 38,411.60 - Step 4: Simplify right side
75,825.09x = 4,371,545,651.41 - Step 5: Solve for x
x = 4,371,545,651.41/75,825.09 - Step 6: Final answer
x = 57,653.02
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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.