Finding the Fourth Proportional to 87,731.80, 121,068.66 and 50,006.68
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Solution
The fourth proportional to 87,731.80, 121,068.66 and 50,006.68 is: 69,008.52
Step by Step Solution
- Step 1: Write the proportion equation
87,731.80 : 121,068.66 = 50,006.68 : x - Step 2: Convert to fraction form
87,731.80/121,068.66 = 50,006.68/x - Step 3: Cross multiply
87,731.80x = 121,068.66 × 50,006.68 - Step 4: Simplify right side
87,731.80x = 6,054,241,738.65 - Step 5: Solve for x
x = 6,054,241,738.65/87,731.80 - Step 6: Final answer
x = 69,008.52
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1.5x scale
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.