Finding the Fourth Proportional to 90,077.36, 135,118.84 and 30,912.26
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Solution
The fourth proportional to 90,077.36, 135,118.84 and 30,912.26 is: 46,369.35
Step by Step Solution
- Step 1: Write the proportion equation
90,077.36 : 135,118.84 = 30,912.26 : x - Step 2: Convert to fraction form
90,077.36/135,118.84 = 30,912.26/x - Step 3: Cross multiply
90,077.36x = 135,118.84 × 30,912.26 - Step 4: Simplify right side
90,077.36x = 4,176,828,712.98 - Step 5: Solve for x
x = 4,176,828,712.98/90,077.36 - Step 6: Final answer
x = 46,369.35
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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.