Finding the Fourth Proportional to 93,912.12, 129,609.36 and 53,631.60
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Solution
The fourth proportional to 93,912.12, 129,609.36 and 53,631.60 is: 74,017.68
Step by Step Solution
- Step 1: Write the proportion equation
93,912.12 : 129,609.36 = 53,631.60 : x - Step 2: Convert to fraction form
93,912.12/129,609.36 = 53,631.60/x - Step 3: Cross multiply
93,912.12x = 129,609.36 × 53,631.60 - Step 4: Simplify right side
93,912.12x = 6,951,157,351.78 - Step 5: Solve for x
x = 6,951,157,351.78/93,912.12 - Step 6: Final answer
x = 74,017.68
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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.