Finding the Fourth Proportional to 85,432.68, 117,778.50 and 73,621.80
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Solution
The fourth proportional to 85,432.68, 117,778.50 and 73,621.80 is: 101,495.88
Step by Step Solution
- Step 1: Write the proportion equation
85,432.68 : 117,778.50 = 73,621.80 : x - Step 2: Convert to fraction form
85,432.68/117,778.50 = 73,621.80/x - Step 3: Cross multiply
85,432.68x = 117,778.50 × 73,621.80 - Step 4: Simplify right side
85,432.68x = 8,671,065,171.30 - Step 5: Solve for x
x = 8,671,065,171.30/85,432.68 - Step 6: Final answer
x = 101,495.88
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.