Finding the Fourth Proportional to 28,758,721.50, 43,138,967.99 and 12,576,343.05
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Solution
The fourth proportional to 28,758,721.50, 43,138,967.99 and 12,576,343.05 is: 18,864,901.91
Step by Step Solution
- Step 1: Write the proportion equation
28,758,721.50 : 43,138,967.99 = 12,576,343.05 : x - Step 2: Convert to fraction form
28,758,721.50/43,138,967.99 = 12,576,343.05/x - Step 3: Cross multiply
28,758,721.50x = 43,138,967.99 × 12,576,343.05 - Step 4: Simplify right side
28,758,721.50x = 542,530,460,202,327.25 - Step 5: Solve for x
x = 542,530,460,202,327.25/28,758,721.50 - Step 6: Final answer
x = 18,864,901.91
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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.