Finding the Fourth Proportional to 81,802.08, 122,645.88 and 31,840.20
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Solution
The fourth proportional to 81,802.08, 122,645.88 and 31,840.20 is: 47,738.02
Step by Step Solution
- Step 1: Write the proportion equation
81,802.08 : 122,645.88 = 31,840.20 : x - Step 2: Convert to fraction form
81,802.08/122,645.88 = 31,840.20/x - Step 3: Cross multiply
81,802.08x = 122,645.88 × 31,840.20 - Step 4: Simplify right side
81,802.08x = 3,905,069,348.38 - Step 5: Solve for x
x = 3,905,069,348.38/81,802.08 - Step 6: Final answer
x = 47,738.02
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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.