Finding the Fourth Proportional to 85,912.79, 118,560.29 and 47,672.49
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Solution
The fourth proportional to 85,912.79, 118,560.29 and 47,672.49 is: 65,788.39
Step by Step Solution
- Step 1: Write the proportion equation
85,912.79 : 118,560.29 = 47,672.49 : x - Step 2: Convert to fraction form
85,912.79/118,560.29 = 47,672.49/x - Step 3: Cross multiply
85,912.79x = 118,560.29 × 47,672.49 - Step 4: Simplify right side
85,912.79x = 5,652,064,239.42 - Step 5: Solve for x
x = 5,652,064,239.42/85,912.79 - Step 6: Final answer
x = 65,788.39
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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.