Finding the Fourth Proportional to 81,171.09, 121,756.68 and 53,267.67
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Solution
The fourth proportional to 81,171.09, 121,756.68 and 53,267.67 is: 79,901.53
Step by Step Solution
- Step 1: Write the proportion equation
81,171.09 : 121,756.68 = 53,267.67 : x - Step 2: Convert to fraction form
81,171.09/121,756.68 = 53,267.67/x - Step 3: Cross multiply
81,171.09x = 121,756.68 × 53,267.67 - Step 4: Simplify right side
81,171.09x = 6,485,694,650.54 - Step 5: Solve for x
x = 6,485,694,650.54/81,171.09 - Step 6: Final answer
x = 79,901.53
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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.