Finding the Fourth Proportional to 87,776.62, 121,131.54 and 47,490.26
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Solution
The fourth proportional to 87,776.62, 121,131.54 and 47,490.26 is: 65,536.45
Step by Step Solution
- Step 1: Write the proportion equation
87,776.62 : 121,131.54 = 47,490.26 : x - Step 2: Convert to fraction form
87,776.62/121,131.54 = 47,490.26/x - Step 3: Cross multiply
87,776.62x = 121,131.54 × 47,490.26 - Step 4: Simplify right side
87,776.62x = 5,752,567,723.14 - Step 5: Solve for x
x = 5,752,567,723.14/87,776.62 - Step 6: Final answer
x = 65,536.45
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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.