Finding the Fourth Proportional to 76,615.48, 115,030.86 and 39,202.38
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Solution
The fourth proportional to 76,615.48, 115,030.86 and 39,202.38 is: 58,858.65
Step by Step Solution
- Step 1: Write the proportion equation
76,615.48 : 115,030.86 = 39,202.38 : x - Step 2: Convert to fraction form
76,615.48/115,030.86 = 39,202.38/x - Step 3: Cross multiply
76,615.48x = 115,030.86 × 39,202.38 - Step 4: Simplify right side
76,615.48x = 4,509,483,485.45 - Step 5: Solve for x
x = 4,509,483,485.45/76,615.48 - Step 6: Final answer
x = 58,858.65
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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.