Finding the Fourth Proportional to 90,545.12, 135,818.36 and 34,370.09
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Solution
The fourth proportional to 90,545.12, 135,818.36 and 34,370.09 is: 51,555.39
Step by Step Solution
- Step 1: Write the proportion equation
90,545.12 : 135,818.36 = 34,370.09 : x - Step 2: Convert to fraction form
90,545.12/135,818.36 = 34,370.09/x - Step 3: Cross multiply
90,545.12x = 135,818.36 × 34,370.09 - Step 4: Simplify right side
90,545.12x = 4,668,088,405.91 - Step 5: Solve for x
x = 4,668,088,405.91/90,545.12 - Step 6: Final answer
x = 51,555.39
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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.