Finding the Fourth Proportional to 86,402.70, 121,313.70 and 86,402.70
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Solution
The fourth proportional to 86,402.70, 121,313.70 and 86,402.70 is: 121,313.70
Step by Step Solution
- Step 1: Write the proportion equation
86,402.70 : 121,313.70 = 86,402.70 : x - Step 2: Convert to fraction form
86,402.70/121,313.70 = 86,402.70/x - Step 3: Cross multiply
86,402.70x = 121,313.70 × 86,402.70 - Step 4: Simplify right side
86,402.70x = 10,481,831,226.99 - Step 5: Solve for x
x = 10,481,831,226.99/86,402.70 - Step 6: Final answer
x = 121,313.70
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.