Finding the Fourth Proportional to 78,350.36, 108,212.52 and 52,812.68
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Solution
The fourth proportional to 78,350.36, 108,212.52 and 52,812.68 is: 72,941.50
Step by Step Solution
- Step 1: Write the proportion equation
78,350.36 : 108,212.52 = 52,812.68 : x - Step 2: Convert to fraction form
78,350.36/108,212.52 = 52,812.68/x - Step 3: Cross multiply
78,350.36x = 108,212.52 × 52,812.68 - Step 4: Simplify right side
78,350.36x = 5,714,992,385.63 - Step 5: Solve for x
x = 5,714,992,385.63/78,350.36 - Step 6: Final answer
x = 72,941.50
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.