Finding the Fourth Proportional to 75,134.03, 103,823.12 and 53,879.63
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Solution
The fourth proportional to 75,134.03, 103,823.12 and 53,879.63 is: 74,452.96
Step by Step Solution
- Step 1: Write the proportion equation
75,134.03 : 103,823.12 = 53,879.63 : x - Step 2: Convert to fraction form
75,134.03/103,823.12 = 53,879.63/x - Step 3: Cross multiply
75,134.03x = 103,823.12 × 53,879.63 - Step 4: Simplify right side
75,134.03x = 5,593,951,021.65 - Step 5: Solve for x
x = 5,593,951,021.65/75,134.03 - Step 6: Final answer
x = 74,452.96
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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.