Finding the Fourth Proportional to 88,929.70, 133,204.30 and 71,989.56
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Solution
The fourth proportional to 88,929.70, 133,204.30 and 71,989.56 is: 107,830.33
Step by Step Solution
- Step 1: Write the proportion equation
88,929.70 : 133,204.30 = 71,989.56 : x - Step 2: Convert to fraction form
88,929.70/133,204.30 = 71,989.56/x - Step 3: Cross multiply
88,929.70x = 133,204.30 × 71,989.56 - Step 4: Simplify right side
88,929.70x = 9,589,318,767.13 - Step 5: Solve for x
x = 9,589,318,767.13/88,929.70 - Step 6: Final answer
x = 107,830.33
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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.