Finding the Fourth Proportional to 91,137.96, 136,718.28 and 38,534.13
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Solution
The fourth proportional to 91,137.96, 136,718.28 and 38,534.13 is: 57,805.99
Step by Step Solution
- Step 1: Write the proportion equation
91,137.96 : 136,718.28 = 38,534.13 : x - Step 2: Convert to fraction form
91,137.96/136,718.28 = 38,534.13/x - Step 3: Cross multiply
91,137.96x = 136,718.28 × 38,534.13 - Step 4: Simplify right side
91,137.96x = 5,268,319,974.90 - Step 5: Solve for x
x = 5,268,319,974.90/91,137.96 - Step 6: Final answer
x = 57,805.99
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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.