Finding the Fourth Proportional to 81,569.84, 122,188.68 and 74,765.84
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Solution
The fourth proportional to 81,569.84, 122,188.68 and 74,765.84 is: 111,996.53
Step by Step Solution
- Step 1: Write the proportion equation
81,569.84 : 122,188.68 = 74,765.84 : x - Step 2: Convert to fraction form
81,569.84/122,188.68 = 74,765.84/x - Step 3: Cross multiply
81,569.84x = 122,188.68 × 74,765.84 - Step 4: Simplify right side
81,569.84x = 9,135,539,298.69 - Step 5: Solve for x
x = 9,135,539,298.69/81,569.84 - Step 6: Final answer
x = 111,996.53
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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.