Finding the Fourth Proportional to 86,989.14, 130,487.76 and 39,584.70
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Solution
The fourth proportional to 86,989.14, 130,487.76 and 39,584.70 is: 59,378.89
Step by Step Solution
- Step 1: Write the proportion equation
86,989.14 : 130,487.76 = 39,584.70 : x - Step 2: Convert to fraction form
86,989.14/130,487.76 = 39,584.70/x - Step 3: Cross multiply
86,989.14x = 130,487.76 × 39,584.70 - Step 4: Simplify right side
86,989.14x = 5,165,318,833.27 - Step 5: Solve for x
x = 5,165,318,833.27/86,989.14 - Step 6: Final answer
x = 59,378.89
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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.