Finding the Fourth Proportional to 86,831,082.70, 130,218,971.25 and 28,525,226.68
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Solution
The fourth proportional to 86,831,082.70, 130,218,971.25 and 28,525,226.68 is: 42,778,755.69
Step by Step Solution
- Step 1: Write the proportion equation
86,831,082.70 : 130,218,971.25 = 28,525,226.68 : x - Step 2: Convert to fraction form
86,831,082.70/130,218,971.25 = 28,525,226.68/x - Step 3: Cross multiply
86,831,082.70x = 130,218,971.25 × 28,525,226.68 - Step 4: Simplify right side
86,831,082.70x = 3,714,525,672,942,653 - Step 5: Solve for x
x = 3,714,525,672,942,653/86,831,082.70 - Step 6: Final answer
x = 42,778,755.69
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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.