Finding the Fourth Proportional to 91,039.63, 136,559.45 and 28,714.99
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Solution
The fourth proportional to 91,039.63, 136,559.45 and 28,714.99 is: 43,072.49
Step by Step Solution
- Step 1: Write the proportion equation
91,039.63 : 136,559.45 = 28,714.99 : x - Step 2: Convert to fraction form
91,039.63/136,559.45 = 28,714.99/x - Step 3: Cross multiply
91,039.63x = 136,559.45 × 28,714.99 - Step 4: Simplify right side
91,039.63x = 3,921,303,241.16 - Step 5: Solve for x
x = 3,921,303,241.16/91,039.63 - Step 6: Final answer
x = 43,072.49
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Double scale
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Similar ratio
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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.