Finding the Fourth Proportional to 87,949.80, 121,364.73 and 56,115.18
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Solution
The fourth proportional to 87,949.80, 121,364.73 and 56,115.18 is: 77,435.12
Step by Step Solution
- Step 1: Write the proportion equation
87,949.80 : 121,364.73 = 56,115.18 : x - Step 2: Convert to fraction form
87,949.80/121,364.73 = 56,115.18/x - Step 3: Cross multiply
87,949.80x = 121,364.73 × 56,115.18 - Step 4: Simplify right side
87,949.80x = 6,810,403,669.60 - Step 5: Solve for x
x = 6,810,403,669.60/87,949.80 - Step 6: Final answer
x = 77,435.12
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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.