Finding the Fourth Proportional to 93,778.35, 129,414.99 and 55,540.07
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Solution
The fourth proportional to 93,778.35, 129,414.99 and 55,540.07 is: 76,645.81
Step by Step Solution
- Step 1: Write the proportion equation
93,778.35 : 129,414.99 = 55,540.07 : x - Step 2: Convert to fraction form
93,778.35/129,414.99 = 55,540.07/x - Step 3: Cross multiply
93,778.35x = 129,414.99 × 55,540.07 - Step 4: Simplify right side
93,778.35x = 7,187,717,603.65 - Step 5: Solve for x
x = 7,187,717,603.65/93,778.35 - Step 6: Final answer
x = 76,645.81
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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.