Finding the Fourth Proportional to 78,054.48, 107,731.08 and 52,912.08
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Solution
The fourth proportional to 78,054.48, 107,731.08 and 52,912.08 is: 73,029.45
Step by Step Solution
- Step 1: Write the proportion equation
78,054.48 : 107,731.08 = 52,912.08 : x - Step 2: Convert to fraction form
78,054.48/107,731.08 = 52,912.08/x - Step 3: Cross multiply
78,054.48x = 107,731.08 × 52,912.08 - Step 4: Simplify right side
78,054.48x = 5,700,275,523.45 - Step 5: Solve for x
x = 5,700,275,523.45/78,054.48 - Step 6: Final answer
x = 73,029.45
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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.