Finding the Fourth Proportional to 78,758.47, 118,006.20 and 55,342.99
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Solution
The fourth proportional to 78,758.47, 118,006.20 and 55,342.99 is: 82,922.08
Step by Step Solution
- Step 1: Write the proportion equation
78,758.47 : 118,006.20 = 55,342.99 : x - Step 2: Convert to fraction form
78,758.47/118,006.20 = 55,342.99/x - Step 3: Cross multiply
78,758.47x = 118,006.20 × 55,342.99 - Step 4: Simplify right side
78,758.47x = 6,530,815,946.54 - Step 5: Solve for x
x = 6,530,815,946.54/78,758.47 - Step 6: Final answer
x = 82,922.08
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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.