Finding the Fourth Proportional to 68,340.90, 102,511.35 and 57,281.70
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Solution
The fourth proportional to 68,340.90, 102,511.35 and 57,281.70 is: 85,922.55
Step by Step Solution
- Step 1: Write the proportion equation
68,340.90 : 102,511.35 = 57,281.70 : x - Step 2: Convert to fraction form
68,340.90/102,511.35 = 57,281.70/x - Step 3: Cross multiply
68,340.90x = 102,511.35 × 57,281.70 - Step 4: Simplify right side
68,340.90x = 5,872,024,397.30 - Step 5: Solve for x
x = 5,872,024,397.30/68,340.90 - Step 6: Final answer
x = 85,922.55
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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.