Finding the Fourth Proportional to 83,925.36, 115,790.87 and 47,620.80
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Solution
The fourth proportional to 83,925.36, 115,790.87 and 47,620.80 is: 65,701.88
Step by Step Solution
- Step 1: Write the proportion equation
83,925.36 : 115,790.87 = 47,620.80 : x - Step 2: Convert to fraction form
83,925.36/115,790.87 = 47,620.80/x - Step 3: Cross multiply
83,925.36x = 115,790.87 × 47,620.80 - Step 4: Simplify right side
83,925.36x = 5,514,053,862.10 - Step 5: Solve for x
x = 5,514,053,862.10/83,925.36 - Step 6: Final answer
x = 65,701.88
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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.