Finding the Fourth Proportional to 77,316.05, 115,874.95 and 67,279.07
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Solution
The fourth proportional to 77,316.05, 115,874.95 and 67,279.07 is: 100,832.35
Step by Step Solution
- Step 1: Write the proportion equation
77,316.05 : 115,874.95 = 67,279.07 : x - Step 2: Convert to fraction form
77,316.05/115,874.95 = 67,279.07/x - Step 3: Cross multiply
77,316.05x = 115,874.95 × 67,279.07 - Step 4: Simplify right side
77,316.05x = 7,795,958,872.30 - Step 5: Solve for x
x = 7,795,958,872.30/77,316.05 - Step 6: Final answer
x = 100,832.35
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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.