Finding the Fourth Proportional to 83,666.20, 115,458.71 and 45,424.99
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Solution
The fourth proportional to 83,666.20, 115,458.71 and 45,424.99 is: 62,686.14
Step by Step Solution
- Step 1: Write the proportion equation
83,666.20 : 115,458.71 = 45,424.99 : x - Step 2: Convert to fraction form
83,666.20/115,458.71 = 45,424.99/x - Step 3: Cross multiply
83,666.20x = 115,458.71 × 45,424.99 - Step 4: Simplify right side
83,666.20x = 5,244,711,005.05 - Step 5: Solve for x
x = 5,244,711,005.05/83,666.20 - Step 6: Final answer
x = 62,686.14
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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.