Finding the Fourth Proportional to 81,644.23, 122,470.90 and 25,492.09
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Solution
The fourth proportional to 81,644.23, 122,470.90 and 25,492.09 is: 38,239.55
Step by Step Solution
- Step 1: Write the proportion equation
81,644.23 : 122,470.90 = 25,492.09 : x - Step 2: Convert to fraction form
81,644.23/122,470.90 = 25,492.09/x - Step 3: Cross multiply
81,644.23x = 122,470.90 × 25,492.09 - Step 4: Simplify right side
81,644.23x = 3,122,038,592.83 - Step 5: Solve for x
x = 3,122,038,592.83/81,644.23 - Step 6: Final answer
x = 38,239.55
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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.