Finding the Fourth Proportional to 75,615.75, 104,349.74 and 42,081.75
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Solution
The fourth proportional to 75,615.75, 104,349.74 and 42,081.75 is: 58,072.82
Step by Step Solution
- Step 1: Write the proportion equation
75,615.75 : 104,349.74 = 42,081.75 : x - Step 2: Convert to fraction form
75,615.75/104,349.74 = 42,081.75/x - Step 3: Cross multiply
75,615.75x = 104,349.74 × 42,081.75 - Step 4: Simplify right side
75,615.75x = 4,391,219,460.84 - Step 5: Solve for x
x = 4,391,219,460.84/75,615.75 - Step 6: Final answer
x = 58,072.82
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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.