Finding the Fourth Proportional to 77,815.62, 107,393.63 and 47,621.05
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Solution
The fourth proportional to 77,815.62, 107,393.63 and 47,621.05 is: 65,721.98
Step by Step Solution
- Step 1: Write the proportion equation
77,815.62 : 107,393.63 = 47,621.05 : x - Step 2: Convert to fraction form
77,815.62/107,393.63 = 47,621.05/x - Step 3: Cross multiply
77,815.62x = 107,393.63 × 47,621.05 - Step 4: Simplify right side
77,815.62x = 5,114,196,917.32 - Step 5: Solve for x
x = 5,114,196,917.32/77,815.62 - Step 6: Final answer
x = 65,721.98
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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.