Finding the Fourth Proportional to 81,603.74, 122,368.68 and 29,014.62
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Solution
The fourth proportional to 81,603.74, 122,368.68 and 29,014.62 is: 43,508.80
Step by Step Solution
- Step 1: Write the proportion equation
81,603.74 : 122,368.68 = 29,014.62 : x - Step 2: Convert to fraction form
81,603.74/122,368.68 = 29,014.62/x - Step 3: Cross multiply
81,603.74x = 122,368.68 × 29,014.62 - Step 4: Simplify right side
81,603.74x = 3,550,480,750.10 - Step 5: Solve for x
x = 3,550,480,750.10/81,603.74 - Step 6: Final answer
x = 43,508.80
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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.