Finding the Fourth Proportional to 87,837.89, 121,216.30 and 47,551.99
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Solution
The fourth proportional to 87,837.89, 121,216.30 and 47,551.99 is: 65,621.74
Step by Step Solution
- Step 1: Write the proportion equation
87,837.89 : 121,216.30 = 47,551.99 : x - Step 2: Convert to fraction form
87,837.89/121,216.30 = 47,551.99/x - Step 3: Cross multiply
87,837.89x = 121,216.30 × 47,551.99 - Step 4: Simplify right side
87,837.89x = 5,764,075,749.88 - Step 5: Solve for x
x = 5,764,075,749.88/87,837.89 - Step 6: Final answer
x = 65,621.74
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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.