Finding the Fourth Proportional to 86,555.08, 129,832.62 and 20,891.08
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Solution
The fourth proportional to 86,555.08, 129,832.62 and 20,891.08 is: 31,336.62
Step by Step Solution
- Step 1: Write the proportion equation
86,555.08 : 129,832.62 = 20,891.08 : x - Step 2: Convert to fraction form
86,555.08/129,832.62 = 20,891.08/x - Step 3: Cross multiply
86,555.08x = 129,832.62 × 20,891.08 - Step 4: Simplify right side
86,555.08x = 2,712,343,651.03 - Step 5: Solve for x
x = 2,712,343,651.03/86,555.08 - Step 6: Final answer
x = 31,336.62
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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.