Finding the Fourth Proportional to 80,331.68, 110,908.13 and 51,701.09
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Solution
The fourth proportional to 80,331.68, 110,908.13 and 51,701.09 is: 71,379.95
Step by Step Solution
- Step 1: Write the proportion equation
80,331.68 : 110,908.13 = 51,701.09 : x - Step 2: Convert to fraction form
80,331.68/110,908.13 = 51,701.09/x - Step 3: Cross multiply
80,331.68x = 110,908.13 × 51,701.09 - Step 4: Simplify right side
80,331.68x = 5,734,071,617.38 - Step 5: Solve for x
x = 5,734,071,617.38/80,331.68 - Step 6: Final answer
x = 71,379.95
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1.5x scale
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.