Finding the Fourth Proportional to 81,352.49, 122,114.99 and 72,052.88
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Solution
The fourth proportional to 81,352.49, 122,114.99 and 72,052.88 is: 108,155.72
Step by Step Solution
- Step 1: Write the proportion equation
81,352.49 : 122,114.99 = 72,052.88 : x - Step 2: Convert to fraction form
81,352.49/122,114.99 = 72,052.88/x - Step 3: Cross multiply
81,352.49x = 122,114.99 × 72,052.88 - Step 4: Simplify right side
81,352.49x = 8,798,736,290.23 - Step 5: Solve for x
x = 8,798,736,290.23/81,352.49 - Step 6: Final answer
x = 108,155.72
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.