Finding the Fourth Proportional to 91,881.20, 137,821.80 and 29,551.70
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Solution
The fourth proportional to 91,881.20, 137,821.80 and 29,551.70 is: 44,327.55
Step by Step Solution
- Step 1: Write the proportion equation
91,881.20 : 137,821.80 = 29,551.70 : x - Step 2: Convert to fraction form
91,881.20/137,821.80 = 29,551.70/x - Step 3: Cross multiply
91,881.20x = 137,821.80 × 29,551.70 - Step 4: Simplify right side
91,881.20x = 4,072,868,487.06 - Step 5: Solve for x
x = 4,072,868,487.06/91,881.20 - Step 6: Final answer
x = 44,327.55
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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.