Finding the Fourth Proportional to 77,709.76, 107,235.09 and 43,719.68
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Solution
The fourth proportional to 77,709.76, 107,235.09 and 43,719.68 is: 60,330.70
Step by Step Solution
- Step 1: Write the proportion equation
77,709.76 : 107,235.09 = 43,719.68 : x - Step 2: Convert to fraction form
77,709.76/107,235.09 = 43,719.68/x - Step 3: Cross multiply
77,709.76x = 107,235.09 × 43,719.68 - Step 4: Simplify right side
77,709.76x = 4,688,284,087.66 - Step 5: Solve for x
x = 4,688,284,087.66/77,709.76 - Step 6: Final answer
x = 60,330.70
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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.