Finding the Fourth Proportional to 86,661.69, 129,966.71 and 36,740.99
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Solution
The fourth proportional to 86,661.69, 129,966.71 and 36,740.99 is: 55,100.53
Step by Step Solution
- Step 1: Write the proportion equation
86,661.69 : 129,966.71 = 36,740.99 : x - Step 2: Convert to fraction form
86,661.69/129,966.71 = 36,740.99/x - Step 3: Cross multiply
86,661.69x = 129,966.71 × 36,740.99 - Step 4: Simplify right side
86,661.69x = 4,775,104,758.90 - Step 5: Solve for x
x = 4,775,104,758.90/86,661.69 - Step 6: Final answer
x = 55,100.53
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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.