Finding the Fourth Proportional to 83,391.70, 115,097.92 and 76,666.68
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Solution
The fourth proportional to 83,391.70, 115,097.92 and 76,666.68 is: 105,815.99
Step by Step Solution
- Step 1: Write the proportion equation
83,391.70 : 115,097.92 = 76,666.68 : x - Step 2: Convert to fraction form
83,391.70/115,097.92 = 76,666.68/x - Step 3: Cross multiply
83,391.70x = 115,097.92 × 76,666.68 - Step 4: Simplify right side
83,391.70x = 8,824,175,401.31 - Step 5: Solve for x
x = 8,824,175,401.31/83,391.70 - Step 6: Final answer
x = 105,815.99
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1.5x scale
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.