Finding the Fourth Proportional to 86,128.08, 129,122.32 and 26,933.28
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Solution
The fourth proportional to 86,128.08, 129,122.32 and 26,933.28 is: 40,378.09
Step by Step Solution
- Step 1: Write the proportion equation
86,128.08 : 129,122.32 = 26,933.28 : x - Step 2: Convert to fraction form
86,128.08/129,122.32 = 26,933.28/x - Step 3: Cross multiply
86,128.08x = 129,122.32 × 26,933.28 - Step 4: Simplify right side
86,128.08x = 3,477,687,598.81 - Step 5: Solve for x
x = 3,477,687,598.81/86,128.08 - Step 6: Final answer
x = 40,378.09
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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.