Finding the Fourth Proportional to 83,543.21, 115,278.96 and 47,735.54
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Solution
The fourth proportional to 83,543.21, 115,278.96 and 47,735.54 is: 65,868.95
Step by Step Solution
- Step 1: Write the proportion equation
83,543.21 : 115,278.96 = 47,735.54 : x - Step 2: Convert to fraction form
83,543.21/115,278.96 = 47,735.54/x - Step 3: Cross multiply
83,543.21x = 115,278.96 × 47,735.54 - Step 4: Simplify right side
83,543.21x = 5,502,902,829.84 - Step 5: Solve for x
x = 5,502,902,829.84/83,543.21 - Step 6: Final answer
x = 65,868.95
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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.