Finding the Fourth Proportional to 92,129.20, 138,112.80 and 62,450.80
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Solution
The fourth proportional to 92,129.20, 138,112.80 and 62,450.80 is: 93,621.29
Step by Step Solution
- Step 1: Write the proportion equation
92,129.20 : 138,112.80 = 62,450.80 : x - Step 2: Convert to fraction form
92,129.20/138,112.80 = 62,450.80/x - Step 3: Cross multiply
92,129.20x = 138,112.80 × 62,450.80 - Step 4: Simplify right side
92,129.20x = 8,625,254,850.24 - Step 5: Solve for x
x = 8,625,254,850.24/92,129.20 - Step 6: Final answer
x = 93,621.29
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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.