Finding the Fourth Proportional to 87,769.47, 121,121.50 and 47,483.14
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Solution
The fourth proportional to 87,769.47, 121,121.50 and 47,483.14 is: 65,526.53
Step by Step Solution
- Step 1: Write the proportion equation
87,769.47 : 121,121.50 = 47,483.14 : x - Step 2: Convert to fraction form
87,769.47/121,121.50 = 47,483.14/x - Step 3: Cross multiply
87,769.47x = 121,121.50 × 47,483.14 - Step 4: Simplify right side
87,769.47x = 5,751,229,141.51 - Step 5: Solve for x
x = 5,751,229,141.51/87,769.47 - Step 6: Final answer
x = 65,526.53
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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.