Finding the Fourth Proportional to 75,228.48, 104,290.56 and 71,233.68
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Solution
The fourth proportional to 75,228.48, 104,290.56 and 71,233.68 is: 98,752.50
Step by Step Solution
- Step 1: Write the proportion equation
75,228.48 : 104,290.56 = 71,233.68 : x - Step 2: Convert to fraction form
75,228.48/104,290.56 = 71,233.68/x - Step 3: Cross multiply
75,228.48x = 104,290.56 × 71,233.68 - Step 4: Simplify right side
75,228.48x = 7,429,000,378.06 - Step 5: Solve for x
x = 7,429,000,378.06/75,228.48 - Step 6: Final answer
x = 98,752.50
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Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.