Finding the Fourth Proportional to 77,059.36, 115,578.56 and 20,903.08
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Solution
The fourth proportional to 77,059.36, 115,578.56 and 20,903.08 is: 31,351.78
Step by Step Solution
- Step 1: Write the proportion equation
77,059.36 : 115,578.56 = 20,903.08 : x - Step 2: Convert to fraction form
77,059.36/115,578.56 = 20,903.08/x - Step 3: Cross multiply
77,059.36x = 115,578.56 × 20,903.08 - Step 4: Simplify right side
77,059.36x = 2,415,947,885.96 - Step 5: Solve for x
x = 2,415,947,885.96/77,059.36 - Step 6: Final answer
x = 31,351.78
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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.