Finding the Fourth Proportional to 77,219.40, 115,610.64 and 49,069.68
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Solution
The fourth proportional to 77,219.40, 115,610.64 and 49,069.68 is: 73,465.70
Step by Step Solution
- Step 1: Write the proportion equation
77,219.40 : 115,610.64 = 49,069.68 : x - Step 2: Convert to fraction form
77,219.40/115,610.64 = 49,069.68/x - Step 3: Cross multiply
77,219.40x = 115,610.64 × 49,069.68 - Step 4: Simplify right side
77,219.40x = 5,672,977,109.40 - Step 5: Solve for x
x = 5,672,977,109.40/77,219.40 - Step 6: Final answer
x = 73,465.70
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1.5x scale
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.