Finding the Fourth Proportional to 76,944.64, 115,415.74 and 39,483.08
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Solution
The fourth proportional to 76,944.64, 115,415.74 and 39,483.08 is: 59,223.99
Step by Step Solution
- Step 1: Write the proportion equation
76,944.64 : 115,415.74 = 39,483.08 : x - Step 2: Convert to fraction form
76,944.64/115,415.74 = 39,483.08/x - Step 3: Cross multiply
76,944.64x = 115,415.74 × 39,483.08 - Step 4: Simplify right side
76,944.64x = 4,556,968,895.68 - Step 5: Solve for x
x = 4,556,968,895.68/76,944.64 - Step 6: Final answer
x = 59,223.99
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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.