Finding the Fourth Proportional to 79,209.11, 118,530.54 and 68,801.75
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Solution
The fourth proportional to 79,209.11, 118,530.54 and 68,801.75 is: 102,956.70
Step by Step Solution
- Step 1: Write the proportion equation
79,209.11 : 118,530.54 = 68,801.75 : x - Step 2: Convert to fraction form
79,209.11/118,530.54 = 68,801.75/x - Step 3: Cross multiply
79,209.11x = 118,530.54 × 68,801.75 - Step 4: Simplify right side
79,209.11x = 8,155,108,580.45 - Step 5: Solve for x
x = 8,155,108,580.45/79,209.11 - Step 6: Final answer
x = 102,956.70
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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.