Finding the Fourth Proportional to 91,278.36, 136,933.11 and 40,695.74
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Solution
The fourth proportional to 91,278.36, 136,933.11 and 40,695.74 is: 61,050.55
Step by Step Solution
- Step 1: Write the proportion equation
91,278.36 : 136,933.11 = 40,695.74 : x - Step 2: Convert to fraction form
91,278.36/136,933.11 = 40,695.74/x - Step 3: Cross multiply
91,278.36x = 136,933.11 × 40,695.74 - Step 4: Simplify right side
91,278.36x = 5,572,593,696.14 - Step 5: Solve for x
x = 5,572,593,696.14/91,278.36 - Step 6: Final answer
x = 61,050.55
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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.