Finding the Fourth Proportional to 100,024.67, 138,029.63 and 57,013.49
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Solution
The fourth proportional to 100,024.67, 138,029.63 and 57,013.49 is: 78,676.09
Step by Step Solution
- Step 1: Write the proportion equation
100,024.67 : 138,029.63 = 57,013.49 : x - Step 2: Convert to fraction form
100,024.67/138,029.63 = 57,013.49/x - Step 3: Cross multiply
100,024.67x = 138,029.63 × 57,013.49 - Step 4: Simplify right side
100,024.67x = 7,869,549,954.49 - Step 5: Solve for x
x = 7,869,549,954.49/100,024.67 - Step 6: Final answer
x = 78,676.09
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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.