Finding the Fourth Proportional to 86,791.13, 130,072.93 and 49,368.41
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Solution
The fourth proportional to 86,791.13, 130,072.93 and 49,368.41 is: 73,987.90
Step by Step Solution
- Step 1: Write the proportion equation
86,791.13 : 130,072.93 = 49,368.41 : x - Step 2: Convert to fraction form
86,791.13/130,072.93 = 49,368.41/x - Step 3: Cross multiply
86,791.13x = 130,072.93 × 49,368.41 - Step 4: Simplify right side
86,791.13x = 6,421,493,738.14 - Step 5: Solve for x
x = 6,421,493,738.14/86,791.13 - Step 6: Final answer
x = 73,987.90
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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.