Finding the Fourth Proportional to 89,871.85, 124,023.84 and 49,587.09
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Solution
The fourth proportional to 89,871.85, 124,023.84 and 49,587.09 is: 68,430.56
Step by Step Solution
- Step 1: Write the proportion equation
89,871.85 : 124,023.84 = 49,587.09 : x - Step 2: Convert to fraction form
89,871.85/124,023.84 = 49,587.09/x - Step 3: Cross multiply
89,871.85x = 124,023.84 × 49,587.09 - Step 4: Simplify right side
89,871.85x = 6,149,981,316.23 - Step 5: Solve for x
x = 6,149,981,316.23/89,871.85 - Step 6: Final answer
x = 68,430.56
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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.