Finding the Fourth Proportional to 90,614.70, 135,920.84 and 55,480.55
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Solution
The fourth proportional to 90,614.70, 135,920.84 and 55,480.55 is: 83,220.07
Step by Step Solution
- Step 1: Write the proportion equation
90,614.70 : 135,920.84 = 55,480.55 : x - Step 2: Convert to fraction form
90,614.70/135,920.84 = 55,480.55/x - Step 3: Cross multiply
90,614.70x = 135,920.84 × 55,480.55 - Step 4: Simplify right side
90,614.70x = 7,540,962,002.66 - Step 5: Solve for x
x = 7,540,962,002.66/90,614.70 - Step 6: Final answer
x = 83,220.07
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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.