Finding the Fourth Proportional to 31,128,549.60, 46,699,822.80 and 18,342,472.80
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Solution
The fourth proportional to 31,128,549.60, 46,699,822.80 and 18,342,472.80 is: 27,517,833.00
Step by Step Solution
- Step 1: Write the proportion equation
31,128,549.60 : 46,699,822.80 = 18,342,472.80 : x - Step 2: Convert to fraction form
31,128,549.60/46,699,822.80 = 18,342,472.80/x - Step 3: Cross multiply
31,128,549.60x = 46,699,822.80 × 18,342,472.80 - Step 4: Simplify right side
31,128,549.60x = 856,590,229,473,819.88 - Step 5: Solve for x
x = 856,590,229,473,819.88/31,128,549.60 - Step 6: Final answer
x = 27,517,833.00
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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.