Finding the Fourth Proportional to 78,766.47, 118,018.20 and 55,350.99
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Solution
The fourth proportional to 78,766.47, 118,018.20 and 55,350.99 is: 82,934.07
Step by Step Solution
- Step 1: Write the proportion equation
78,766.47 : 118,018.20 = 55,350.99 : x - Step 2: Convert to fraction form
78,766.47/118,018.20 = 55,350.99/x - Step 3: Cross multiply
78,766.47x = 118,018.20 × 55,350.99 - Step 4: Simplify right side
78,766.47x = 6,532,424,208.02 - Step 5: Solve for x
x = 6,532,424,208.02/78,766.47 - Step 6: Final answer
x = 82,934.07
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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.