Finding the Fourth Proportional to 83,419.20, 115,117.97 and 45,178.14
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Solution
The fourth proportional to 83,419.20, 115,117.97 and 45,178.14 is: 62,345.55
Step by Step Solution
- Step 1: Write the proportion equation
83,419.20 : 115,117.97 = 45,178.14 : x - Step 2: Convert to fraction form
83,419.20/115,117.97 = 45,178.14/x - Step 3: Cross multiply
83,419.20x = 115,117.97 × 45,178.14 - Step 4: Simplify right side
83,419.20x = 5,200,815,765.18 - Step 5: Solve for x
x = 5,200,815,765.18/83,419.20 - Step 6: Final answer
x = 62,345.55
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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.