Finding the Fourth Proportional to 79,779.74, 119,724.89 and 51,629.70
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Solution
The fourth proportional to 79,779.74, 119,724.89 and 51,629.70 is: 77,480.33
Step by Step Solution
- Step 1: Write the proportion equation
79,779.74 : 119,724.89 = 51,629.70 : x - Step 2: Convert to fraction form
79,779.74/119,724.89 = 51,629.70/x - Step 3: Cross multiply
79,779.74x = 119,724.89 × 51,629.70 - Step 4: Simplify right side
79,779.74x = 6,181,360,344.05 - Step 5: Solve for x
x = 6,181,360,344.05/79,779.74 - Step 6: Final answer
x = 77,480.33
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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.