Finding the Fourth Proportional to 87,763.65, 121,113.21 and 47,476.81
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Solution
The fourth proportional to 87,763.65, 121,113.21 and 47,476.81 is: 65,517.66
Step by Step Solution
- Step 1: Write the proportion equation
87,763.65 : 121,113.21 = 47,476.81 : x - Step 2: Convert to fraction form
87,763.65/121,113.21 = 47,476.81/x - Step 3: Cross multiply
87,763.65x = 121,113.21 × 47,476.81 - Step 4: Simplify right side
87,763.65x = 5,750,068,859.66 - Step 5: Solve for x
x = 5,750,068,859.66/87,763.65 - Step 6: Final answer
x = 65,517.66
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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.