Finding the Fourth Proportional to 83,964.18, 115,865.73 and 50,423.70
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Solution
The fourth proportional to 83,964.18, 115,865.73 and 50,423.70 is: 69,581.80
Step by Step Solution
- Step 1: Write the proportion equation
83,964.18 : 115,865.73 = 50,423.70 : x - Step 2: Convert to fraction form
83,964.18/115,865.73 = 50,423.70/x - Step 3: Cross multiply
83,964.18x = 115,865.73 × 50,423.70 - Step 4: Simplify right side
83,964.18x = 5,842,378,809.80 - Step 5: Solve for x
x = 5,842,378,809.80/83,964.18 - Step 6: Final answer
x = 69,581.80
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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.