Finding the Fourth Proportional to 76,985.10, 115,427.70 and 32,599.80
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Solution
The fourth proportional to 76,985.10, 115,427.70 and 32,599.80 is: 48,878.55
Step by Step Solution
- Step 1: Write the proportion equation
76,985.10 : 115,427.70 = 32,599.80 : x - Step 2: Convert to fraction form
76,985.10/115,427.70 = 32,599.80/x - Step 3: Cross multiply
76,985.10x = 115,427.70 × 32,599.80 - Step 4: Simplify right side
76,985.10x = 3,762,919,934.46 - Step 5: Solve for x
x = 3,762,919,934.46/76,985.10 - Step 6: Final answer
x = 48,878.55
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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.