Finding the Fourth Proportional to 87,779.43, 121,083.66 and 53,803.17
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Solution
The fourth proportional to 87,779.43, 121,083.66 and 53,803.17 is: 74,216.53
Step by Step Solution
- Step 1: Write the proportion equation
87,779.43 : 121,083.66 = 53,803.17 : x - Step 2: Convert to fraction form
87,779.43/121,083.66 = 53,803.17/x - Step 3: Cross multiply
87,779.43x = 121,083.66 × 53,803.17 - Step 4: Simplify right side
87,779.43x = 6,514,684,743.20 - Step 5: Solve for x
x = 6,514,684,743.20/87,779.43 - Step 6: Final answer
x = 74,216.53
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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.