Finding the Fourth Proportional to 76,985.60, 115,521.60 and 32,604.80
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Solution
The fourth proportional to 76,985.60, 115,521.60 and 32,604.80 is: 48,925.50
Step by Step Solution
- Step 1: Write the proportion equation
76,985.60 : 115,521.60 = 32,604.80 : x - Step 2: Convert to fraction form
76,985.60/115,521.60 = 32,604.80/x - Step 3: Cross multiply
76,985.60x = 115,521.60 × 32,604.80 - Step 4: Simplify right side
76,985.60x = 3,766,558,663.68 - Step 5: Solve for x
x = 3,766,558,663.68/76,985.60 - Step 6: Final answer
x = 48,925.50
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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.