Finding the Fourth Proportional to 86,630.05, 129,993.68 and 36,701.65
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Solution
The fourth proportional to 86,630.05, 129,993.68 and 36,701.65 is: 55,073.07
Step by Step Solution
- Step 1: Write the proportion equation
86,630.05 : 129,993.68 = 36,701.65 : x - Step 2: Convert to fraction form
86,630.05/129,993.68 = 36,701.65/x - Step 3: Cross multiply
86,630.05x = 129,993.68 × 36,701.65 - Step 4: Simplify right side
86,630.05x = 4,770,982,545.57 - Step 5: Solve for x
x = 4,770,982,545.57/86,630.05 - Step 6: Final answer
x = 55,073.07
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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.