Finding the Fourth Proportional to 77,201.18, 115,823.64 and 39,788.54
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Solution
The fourth proportional to 77,201.18, 115,823.64 and 39,788.54 is: 59,694.08
Step by Step Solution
- Step 1: Write the proportion equation
77,201.18 : 115,823.64 = 39,788.54 : x - Step 2: Convert to fraction form
77,201.18/115,823.64 = 39,788.54/x - Step 3: Cross multiply
77,201.18x = 115,823.64 × 39,788.54 - Step 4: Simplify right side
77,201.18x = 4,608,453,533.09 - Step 5: Solve for x
x = 4,608,453,533.09/77,201.18 - Step 6: Final answer
x = 59,694.08
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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.