Finding the Fourth Proportional to 87,783.68, 121,140.97 and 49,555.60
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Solution
The fourth proportional to 87,783.68, 121,140.97 and 49,555.60 is: 68,386.43
Step by Step Solution
- Step 1: Write the proportion equation
87,783.68 : 121,140.97 = 49,555.60 : x - Step 2: Convert to fraction form
87,783.68/121,140.97 = 49,555.60/x - Step 3: Cross multiply
87,783.68x = 121,140.97 × 49,555.60 - Step 4: Simplify right side
87,783.68x = 6,003,213,026.19 - Step 5: Solve for x
x = 6,003,213,026.19/87,783.68 - Step 6: Final answer
x = 68,386.43
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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.