Finding the Fourth Proportional to 77,765.41, 107,318.28 and 43,775.12
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Solution
The fourth proportional to 77,765.41, 107,318.28 and 43,775.12 is: 60,410.79
Step by Step Solution
- Step 1: Write the proportion equation
77,765.41 : 107,318.28 = 43,775.12 : x - Step 2: Convert to fraction form
77,765.41/107,318.28 = 43,775.12/x - Step 3: Cross multiply
77,765.41x = 107,318.28 × 43,775.12 - Step 4: Simplify right side
77,765.41x = 4,697,870,160.63 - Step 5: Solve for x
x = 4,697,870,160.63/77,765.41 - Step 6: Final answer
x = 60,410.79
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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.