Finding the Fourth Proportional to 86,086,979.87, 129,130,563.34 and 21,390,785.17
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Solution
The fourth proportional to 86,086,979.87, 129,130,563.34 and 21,390,785.17 is: 32,086,200.99
Step by Step Solution
- Step 1: Write the proportion equation
86,086,979.87 : 129,130,563.34 = 21,390,785.17 : x - Step 2: Convert to fraction form
86,086,979.87/129,130,563.34 = 21,390,785.17/x - Step 3: Cross multiply
86,086,979.87x = 129,130,563.34 × 21,390,785.17 - Step 4: Simplify right side
86,086,979.87x = 2,762,204,138,870,499.50 - Step 5: Solve for x
x = 2,762,204,138,870,499.50/86,086,979.87 - Step 6: Final answer
x = 32,086,200.99
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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.