Finding the Fourth Proportional to 85,461.60, 128,214.80 and 32,872.80
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Solution
The fourth proportional to 85,461.60, 128,214.80 and 32,872.80 is: 49,317.82
Step by Step Solution
- Step 1: Write the proportion equation
85,461.60 : 128,214.80 = 32,872.80 : x - Step 2: Convert to fraction form
85,461.60/128,214.80 = 32,872.80/x - Step 3: Cross multiply
85,461.60x = 128,214.80 × 32,872.80 - Step 4: Simplify right side
85,461.60x = 4,214,779,477.44 - Step 5: Solve for x
x = 4,214,779,477.44/85,461.60 - Step 6: Final answer
x = 49,317.82
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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.