Finding the Fourth Proportional to 31,371,319.80, 47,021,987.70 and 12,195,703.80
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Solution
The fourth proportional to 31,371,319.80, 47,021,987.70 and 12,195,703.80 is: 18,279,952.44
Step by Step Solution
- Step 1: Write the proportion equation
31,371,319.80 : 47,021,987.70 = 12,195,703.80 : x - Step 2: Convert to fraction form
31,371,319.80/47,021,987.70 = 12,195,703.80/x - Step 3: Cross multiply
31,371,319.80x = 47,021,987.70 × 12,195,703.80 - Step 4: Simplify right side
31,371,319.80x = 573,466,234,076,443.38 - Step 5: Solve for x
x = 573,466,234,076,443.38/31,371,319.80 - Step 6: Final answer
x = 18,279,952.44
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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.