Finding the Fourth Proportional to 72,076,138.92, 99,473,810.84 and 40,715,510.26
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Solution
The fourth proportional to 72,076,138.92, 99,473,810.84 and 40,715,510.26 is: 56,192,340.86
Step by Step Solution
- Step 1: Write the proportion equation
72,076,138.92 : 99,473,810.84 = 40,715,510.26 : x - Step 2: Convert to fraction form
72,076,138.92/99,473,810.84 = 40,715,510.26/x - Step 3: Cross multiply
72,076,138.92x = 99,473,810.84 × 40,715,510.26 - Step 4: Simplify right side
72,076,138.92x = 4,050,126,965,857,319 - Step 5: Solve for x
x = 4,050,126,965,857,319/72,076,138.92 - Step 6: Final answer
x = 56,192,340.86
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.