Finding the Fourth Proportional to 89.91, 124.05 and 60.84
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Solution
The fourth proportional to 89.91, 124.05 and 60.84 is: 83.94
Step by Step Solution
- Step 1: Write the proportion equation
89.91 : 124.05 = 60.84 : x - Step 2: Convert to fraction form
89.91/124.05 = 60.84/x - Step 3: Cross multiply
89.91x = 124.05 × 60.84 - Step 4: Simplify right side
89.91x = 7,547.20 - Step 5: Solve for x
x = 7,547.20/89.91 - Step 6: Final answer
x = 83.94
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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.