Finding the Fourth Proportional to 83,431.12, 115,106.80 and 47,595.92
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Solution
The fourth proportional to 83,431.12, 115,106.80 and 47,595.92 is: 65,666.31
Step by Step Solution
- Step 1: Write the proportion equation
83,431.12 : 115,106.80 = 47,595.92 : x - Step 2: Convert to fraction form
83,431.12/115,106.80 = 47,595.92/x - Step 3: Cross multiply
83,431.12x = 115,106.80 × 47,595.92 - Step 4: Simplify right side
83,431.12x = 5,478,614,044.26 - Step 5: Solve for x
x = 5,478,614,044.26/83,431.12 - Step 6: Final answer
x = 65,666.31
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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.