Finding the Fourth Proportional to 75,353.10, 103,919.67 and 56,279.07
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Solution
The fourth proportional to 75,353.10, 103,919.67 and 56,279.07 is: 77,614.62
Step by Step Solution
- Step 1: Write the proportion equation
75,353.10 : 103,919.67 = 56,279.07 : x - Step 2: Convert to fraction form
75,353.10/103,919.67 = 56,279.07/x - Step 3: Cross multiply
75,353.10x = 103,919.67 × 56,279.07 - Step 4: Simplify right side
75,353.10x = 5,848,502,382.31 - Step 5: Solve for x
x = 5,848,502,382.31/75,353.10 - Step 6: Final answer
x = 77,614.62
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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.