Finding the Fourth Proportional to 31,709,901.60, 47,543,857.20 and 11,512,519.20
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Solution
The fourth proportional to 31,709,901.60, 47,543,857.20 and 11,512,519.20 is: 17,261,156.33
Step by Step Solution
- Step 1: Write the proportion equation
31,709,901.60 : 47,543,857.20 = 11,512,519.20 : x - Step 2: Convert to fraction form
31,709,901.60/47,543,857.20 = 11,512,519.20/x - Step 3: Cross multiply
31,709,901.60x = 47,543,857.20 × 11,512,519.20 - Step 4: Simplify right side
31,709,901.60x = 547,349,568,857,058.25 - Step 5: Solve for x
x = 547,349,568,857,058.25/31,709,901.60 - Step 6: Final answer
x = 17,261,156.33
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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.