Finding the Fourth Proportional to 78,900.84, 118,121.58 and 41,371.92
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Solution
The fourth proportional to 78,900.84, 118,121.58 and 41,371.92 is: 61,937.45
Step by Step Solution
- Step 1: Write the proportion equation
78,900.84 : 118,121.58 = 41,371.92 : x - Step 2: Convert to fraction form
78,900.84/118,121.58 = 41,371.92/x - Step 3: Cross multiply
78,900.84x = 118,121.58 × 41,371.92 - Step 4: Simplify right side
78,900.84x = 4,886,916,558.03 - Step 5: Solve for x
x = 4,886,916,558.03/78,900.84 - Step 6: Final answer
x = 61,937.45
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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.