Finding the Fourth Proportional to 84,607.51, 126,915.03 and 47,139.19
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Solution
The fourth proportional to 84,607.51, 126,915.03 and 47,139.19 is: 70,710.88
Step by Step Solution
- Step 1: Write the proportion equation
84,607.51 : 126,915.03 = 47,139.19 : x - Step 2: Convert to fraction form
84,607.51/126,915.03 = 47,139.19/x - Step 3: Cross multiply
84,607.51x = 126,915.03 × 47,139.19 - Step 4: Simplify right side
84,607.51x = 5,982,671,713.03 - Step 5: Solve for x
x = 5,982,671,713.03/84,607.51 - Step 6: Final answer
x = 70,710.88
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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.