Finding the Fourth Proportional to 87,683.67, 120,974.91 and 53,656.65
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Solution
The fourth proportional to 87,683.67, 120,974.91 and 53,656.65 is: 74,028.70
Step by Step Solution
- Step 1: Write the proportion equation
87,683.67 : 120,974.91 = 53,656.65 : x - Step 2: Convert to fraction form
87,683.67/120,974.91 = 53,656.65/x - Step 3: Cross multiply
87,683.67x = 120,974.91 × 53,656.65 - Step 4: Simplify right side
87,683.67x = 6,491,108,404.65 - Step 5: Solve for x
x = 6,491,108,404.65/87,683.67 - Step 6: Final answer
x = 74,028.70
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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.