Finding the Fourth Proportional to 87,689.26, 121,011.03 and 47,403.05
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Solution
The fourth proportional to 87,689.26, 121,011.03 and 47,403.05 is: 65,416.12
Step by Step Solution
- Step 1: Write the proportion equation
87,689.26 : 121,011.03 = 47,403.05 : x - Step 2: Convert to fraction form
87,689.26/121,011.03 = 47,403.05/x - Step 3: Cross multiply
87,689.26x = 121,011.03 × 47,403.05 - Step 4: Simplify right side
87,689.26x = 5,736,291,300.59 - Step 5: Solve for x
x = 5,736,291,300.59/87,689.26 - Step 6: Final answer
x = 65,416.12
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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.