Finding the Fourth Proportional to 76,887.80, 115,331.70 and 61,335.80
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Solution
The fourth proportional to 76,887.80, 115,331.70 and 61,335.80 is: 92,003.70
Step by Step Solution
- Step 1: Write the proportion equation
76,887.80 : 115,331.70 = 61,335.80 : x - Step 2: Convert to fraction form
76,887.80/115,331.70 = 61,335.80/x - Step 3: Cross multiply
76,887.80x = 115,331.70 × 61,335.80 - Step 4: Simplify right side
76,887.80x = 7,073,962,084.86 - Step 5: Solve for x
x = 7,073,962,084.86/76,887.80 - Step 6: Final answer
x = 92,003.70
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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.