Finding the Fourth Proportional to 81,460.13, 112,405.86 and 45,644.99
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Solution
The fourth proportional to 81,460.13, 112,405.86 and 45,644.99 is: 62,984.97
Step by Step Solution
- Step 1: Write the proportion equation
81,460.13 : 112,405.86 = 45,644.99 : x - Step 2: Convert to fraction form
81,460.13/112,405.86 = 45,644.99/x - Step 3: Cross multiply
81,460.13x = 112,405.86 × 45,644.99 - Step 4: Simplify right side
81,460.13x = 5,130,763,793.61 - Step 5: Solve for x
x = 5,130,763,793.61/81,460.13 - Step 6: Final answer
x = 62,984.97
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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.