Finding the Fourth Proportional to 75,701.18, 103,711.11 and 72,863.55
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Solution
The fourth proportional to 75,701.18, 103,711.11 and 72,863.55 is: 99,823.53
Step by Step Solution
- Step 1: Write the proportion equation
75,701.18 : 103,711.11 = 72,863.55 : x - Step 2: Convert to fraction form
75,701.18/103,711.11 = 72,863.55/x - Step 3: Cross multiply
75,701.18x = 103,711.11 × 72,863.55 - Step 4: Simplify right side
75,701.18x = 7,556,759,580.73 - Step 5: Solve for x
x = 7,556,759,580.73/75,701.18 - Step 6: Final answer
x = 99,823.53
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.