Finding the Fourth Proportional to 86,119.76, 129,202.68 and 77,894.48
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Solution
The fourth proportional to 86,119.76, 129,202.68 and 77,894.48 is: 116,862.56
Step by Step Solution
- Step 1: Write the proportion equation
86,119.76 : 129,202.68 = 77,894.48 : x - Step 2: Convert to fraction form
86,119.76/129,202.68 = 77,894.48/x - Step 3: Cross multiply
86,119.76x = 129,202.68 × 77,894.48 - Step 4: Simplify right side
86,119.76x = 10,064,175,573.21 - Step 5: Solve for x
x = 10,064,175,573.21/86,119.76 - Step 6: Final answer
x = 116,862.56
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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.