Finding the Fourth Proportional to 38,591,846.61, 53,256,853.11 and 21,189,318.99
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Solution
The fourth proportional to 38,591,846.61, 53,256,853.11 and 21,189,318.99 is: 29,241,317.74
Step by Step Solution
- Step 1: Write the proportion equation
38,591,846.61 : 53,256,853.11 = 21,189,318.99 : x - Step 2: Convert to fraction form
38,591,846.61/53,256,853.11 = 21,189,318.99/x - Step 3: Cross multiply
38,591,846.61x = 53,256,853.11 × 21,189,318.99 - Step 4: Simplify right side
38,591,846.61x = 1,128,476,448,951,363.50 - Step 5: Solve for x
x = 1,128,476,448,951,363.50/38,591,846.61 - Step 6: Final answer
x = 29,241,317.74
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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.