Finding the Fourth Proportional to 90,626.08, 135,864.27 and 39,989.05
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Solution
The fourth proportional to 90,626.08, 135,864.27 and 39,989.05 is: 59,950.55
Step by Step Solution
- Step 1: Write the proportion equation
90,626.08 : 135,864.27 = 39,989.05 : x - Step 2: Convert to fraction form
90,626.08/135,864.27 = 39,989.05/x - Step 3: Cross multiply
90,626.08x = 135,864.27 × 39,989.05 - Step 4: Simplify right side
90,626.08x = 5,433,083,086.24 - Step 5: Solve for x
x = 5,433,083,086.24/90,626.08 - Step 6: Final answer
x = 59,950.55
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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.