Finding the Fourth Proportional to 77,672.64, 107,154.60 and 48,969.68
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Solution
The fourth proportional to 77,672.64, 107,154.60 and 48,969.68 is: 67,556.95
Step by Step Solution
- Step 1: Write the proportion equation
77,672.64 : 107,154.60 = 48,969.68 : x - Step 2: Convert to fraction form
77,672.64/107,154.60 = 48,969.68/x - Step 3: Cross multiply
77,672.64x = 107,154.60 × 48,969.68 - Step 4: Simplify right side
77,672.64x = 5,247,326,472.53 - Step 5: Solve for x
x = 5,247,326,472.53/77,672.64 - Step 6: Final answer
x = 67,556.95
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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.