Finding the Fourth Proportional to 91,101.32, 136,672.20 and 27,930.20
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Solution
The fourth proportional to 91,101.32, 136,672.20 and 27,930.20 is: 41,901.50
Step by Step Solution
- Step 1: Write the proportion equation
91,101.32 : 136,672.20 = 27,930.20 : x - Step 2: Convert to fraction form
91,101.32/136,672.20 = 27,930.20/x - Step 3: Cross multiply
91,101.32x = 136,672.20 × 27,930.20 - Step 4: Simplify right side
91,101.32x = 3,817,281,880.44 - Step 5: Solve for x
x = 3,817,281,880.44/91,101.32 - Step 6: Final answer
x = 41,901.50
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1.5x scale
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.