Finding the Fourth Proportional to 87,282.45, 130,905.18 and 39,884.09
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Solution
The fourth proportional to 87,282.45, 130,905.18 and 39,884.09 is: 59,817.68
Step by Step Solution
- Step 1: Write the proportion equation
87,282.45 : 130,905.18 = 39,884.09 : x - Step 2: Convert to fraction form
87,282.45/130,905.18 = 39,884.09/x - Step 3: Cross multiply
87,282.45x = 130,905.18 × 39,884.09 - Step 4: Simplify right side
87,282.45x = 5,221,033,326.06 - Step 5: Solve for x
x = 5,221,033,326.06/87,282.45 - Step 6: Final answer
x = 59,817.68
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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.