Finding the Fourth Proportional to 77,063.36, 115,584.56 and 20,907.08
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Solution
The fourth proportional to 77,063.36, 115,584.56 and 20,907.08 is: 31,357.78
Step by Step Solution
- Step 1: Write the proportion equation
77,063.36 : 115,584.56 = 20,907.08 : x - Step 2: Convert to fraction form
77,063.36/115,584.56 = 20,907.08/x - Step 3: Cross multiply
77,063.36x = 115,584.56 × 20,907.08 - Step 4: Simplify right side
77,063.36x = 2,416,535,642.68 - Step 5: Solve for x
x = 2,416,535,642.68/77,063.36 - Step 6: Final answer
x = 31,357.78
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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.