Finding the Fourth Proportional to 102,418.92, 153,628.20 and 40,045.68
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Solution
The fourth proportional to 102,418.92, 153,628.20 and 40,045.68 is: 60,068.45
Step by Step Solution
- Step 1: Write the proportion equation
102,418.92 : 153,628.20 = 40,045.68 : x - Step 2: Convert to fraction form
102,418.92/153,628.20 = 40,045.68/x - Step 3: Cross multiply
102,418.92x = 153,628.20 × 40,045.68 - Step 4: Simplify right side
102,418.92x = 6,152,145,736.18 - Step 5: Solve for x
x = 6,152,145,736.18/102,418.92 - Step 6: Final answer
x = 60,068.45
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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.