Finding the Fourth Proportional to 38,128,713.68, 52,617,998.76 and 20,725,048.16
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Solution
The fourth proportional to 38,128,713.68, 52,617,998.76 and 20,725,048.16 is: 28,600,769.69
Step by Step Solution
- Step 1: Write the proportion equation
38,128,713.68 : 52,617,998.76 = 20,725,048.16 : x - Step 2: Convert to fraction form
38,128,713.68/52,617,998.76 = 20,725,048.16/x - Step 3: Cross multiply
38,128,713.68x = 52,617,998.76 × 20,725,048.16 - Step 4: Simplify right side
38,128,713.68x = 1,090,510,558,383,820.25 - Step 5: Solve for x
x = 1,090,510,558,383,820.25/38,128,713.68 - Step 6: Final answer
x = 28,600,769.69
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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.