Finding the Fourth Proportional to 105,447.54, 145,514.12 and 57,697.68
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Solution
The fourth proportional to 105,447.54, 145,514.12 and 57,697.68 is: 79,620.89
Step by Step Solution
- Step 1: Write the proportion equation
105,447.54 : 145,514.12 = 57,697.68 : x - Step 2: Convert to fraction form
105,447.54/145,514.12 = 57,697.68/x - Step 3: Cross multiply
105,447.54x = 145,514.12 × 57,697.68 - Step 4: Simplify right side
105,447.54x = 8,395,827,131.24 - Step 5: Solve for x
x = 8,395,827,131.24/105,447.54 - Step 6: Final answer
x = 79,620.89
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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.