Finding the Fourth Proportional to 86,656.40, 129,989.28 and 27,496.80
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Solution
The fourth proportional to 86,656.40, 129,989.28 and 27,496.80 is: 41,246.69
Step by Step Solution
- Step 1: Write the proportion equation
86,656.40 : 129,989.28 = 27,496.80 : x - Step 2: Convert to fraction form
86,656.40/129,989.28 = 27,496.80/x - Step 3: Cross multiply
86,656.40x = 129,989.28 × 27,496.80 - Step 4: Simplify right side
86,656.40x = 3,574,289,234.30 - Step 5: Solve for x
x = 3,574,289,234.30/86,656.40 - Step 6: Final answer
x = 41,246.69
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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.