Finding the Fourth Proportional to 86,285.12, 129,427.56 and 27,125.96
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Solution
The fourth proportional to 86,285.12, 129,427.56 and 27,125.96 is: 40,688.90
Step by Step Solution
- Step 1: Write the proportion equation
86,285.12 : 129,427.56 = 27,125.96 : x - Step 2: Convert to fraction form
86,285.12/129,427.56 = 27,125.96/x - Step 3: Cross multiply
86,285.12x = 129,427.56 × 27,125.96 - Step 4: Simplify right side
86,285.12x = 3,510,846,815.46 - Step 5: Solve for x
x = 3,510,846,815.46/86,285.12 - Step 6: Final answer
x = 40,688.90
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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.