Finding the Fourth Proportional to 83,543.19, 115,289.78 and 47,733.12
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Solution
The fourth proportional to 83,543.19, 115,289.78 and 47,733.12 is: 65,871.80
Step by Step Solution
- Step 1: Write the proportion equation
83,543.19 : 115,289.78 = 47,733.12 : x - Step 2: Convert to fraction form
83,543.19/115,289.78 = 47,733.12/x - Step 3: Cross multiply
83,543.19x = 115,289.78 × 47,733.12 - Step 4: Simplify right side
83,543.19x = 5,503,140,664.85 - Step 5: Solve for x
x = 5,503,140,664.85/83,543.19 - Step 6: Final answer
x = 65,871.80
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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.