Finding the Fourth Proportional to 84,107.86, 125,980.88 and 39,668.02
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Solution
The fourth proportional to 84,107.86, 125,980.88 and 39,668.02 is: 59,416.70
Step by Step Solution
- Step 1: Write the proportion equation
84,107.86 : 125,980.88 = 39,668.02 : x - Step 2: Convert to fraction form
84,107.86/125,980.88 = 39,668.02/x - Step 3: Cross multiply
84,107.86x = 125,980.88 × 39,668.02 - Step 4: Simplify right side
84,107.86x = 4,997,411,554.17 - Step 5: Solve for x
x = 4,997,411,554.17/84,107.86 - Step 6: Final answer
x = 59,416.70
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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.