Finding the Fourth Proportional to 83,698.20, 125,547.30 and 76,699.80
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Solution
The fourth proportional to 83,698.20, 125,547.30 and 76,699.80 is: 115,049.70
Step by Step Solution
- Step 1: Write the proportion equation
83,698.20 : 125,547.30 = 76,699.80 : x - Step 2: Convert to fraction form
83,698.20/125,547.30 = 76,699.80/x - Step 3: Cross multiply
83,698.20x = 125,547.30 × 76,699.80 - Step 4: Simplify right side
83,698.20x = 9,629,452,800.54 - Step 5: Solve for x
x = 9,629,452,800.54/83,698.20 - Step 6: Final answer
x = 115,049.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.