Finding the Fourth Proportional to 80,804.98, 121,693.70 and 71,561.26
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Solution
The fourth proportional to 80,804.98, 121,693.70 and 71,561.26 is: 107,772.50
Step by Step Solution
- Step 1: Write the proportion equation
80,804.98 : 121,693.70 = 71,561.26 : x - Step 2: Convert to fraction form
80,804.98/121,693.70 = 71,561.26/x - Step 3: Cross multiply
80,804.98x = 121,693.70 × 71,561.26 - Step 4: Simplify right side
80,804.98x = 8,708,554,506.06 - Step 5: Solve for x
x = 8,708,554,506.06/80,804.98 - Step 6: Final answer
x = 107,772.50
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.