Finding the Fourth Proportional to 81,701.02, 122,504.37 and 31,722.71
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Solution
The fourth proportional to 81,701.02, 122,504.37 and 31,722.71 is: 47,565.75
Step by Step Solution
- Step 1: Write the proportion equation
81,701.02 : 122,504.37 = 31,722.71 : x - Step 2: Convert to fraction form
81,701.02/122,504.37 = 31,722.71/x - Step 3: Cross multiply
81,701.02x = 122,504.37 × 31,722.71 - Step 4: Simplify right side
81,701.02x = 3,886,170,603.24 - Step 5: Solve for x
x = 3,886,170,603.24/81,701.02 - Step 6: Final answer
x = 47,565.75
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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.