Finding the Fourth Proportional to 86,921.88, 130,382.84 and 55,953.96
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Solution
The fourth proportional to 86,921.88, 130,382.84 and 55,953.96 is: 83,930.95
Step by Step Solution
- Step 1: Write the proportion equation
86,921.88 : 130,382.84 = 55,953.96 : x - Step 2: Convert to fraction form
86,921.88/130,382.84 = 55,953.96/x - Step 3: Cross multiply
86,921.88x = 130,382.84 × 55,953.96 - Step 4: Simplify right side
86,921.88x = 7,295,436,214.05 - Step 5: Solve for x
x = 7,295,436,214.05/86,921.88 - Step 6: Final answer
x = 83,930.95
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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.