Finding the Fourth Proportional to 72,917.44, 100,630.80 and 40,655.68
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Solution
The fourth proportional to 72,917.44, 100,630.80 and 40,655.68 is: 56,107.48
Step by Step Solution
- Step 1: Write the proportion equation
72,917.44 : 100,630.80 = 40,655.68 : x - Step 2: Convert to fraction form
72,917.44/100,630.80 = 40,655.68/x - Step 3: Cross multiply
72,917.44x = 100,630.80 × 40,655.68 - Step 4: Simplify right side
72,917.44x = 4,091,213,602.94 - Step 5: Solve for x
x = 4,091,213,602.94/72,917.44 - Step 6: Final answer
x = 56,107.48
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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.