Finding the Fourth Proportional to 91,135.89, 125,716.99 and 53,402.85
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Solution
The fourth proportional to 91,135.89, 125,716.99 and 53,402.85 is: 73,666.32
Step by Step Solution
- Step 1: Write the proportion equation
91,135.89 : 125,716.99 = 53,402.85 : x - Step 2: Convert to fraction form
91,135.89/125,716.99 = 53,402.85/x - Step 3: Cross multiply
91,135.89x = 125,716.99 × 53,402.85 - Step 4: Simplify right side
91,135.89x = 6,713,645,997.48 - Step 5: Solve for x
x = 6,713,645,997.48/91,135.89 - Step 6: Final answer
x = 73,666.32
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.