Finding the Fourth Proportional to 77,128.21, 115,705.28 and 24,553.81
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Solution
The fourth proportional to 77,128.21, 115,705.28 and 24,553.81 is: 36,834.84
Step by Step Solution
- Step 1: Write the proportion equation
77,128.21 : 115,705.28 = 24,553.81 : x - Step 2: Convert to fraction form
77,128.21/115,705.28 = 24,553.81/x - Step 3: Cross multiply
77,128.21x = 115,705.28 × 24,553.81 - Step 4: Simplify right side
77,128.21x = 2,841,005,461.12 - Step 5: Solve for x
x = 2,841,005,461.12/77,128.21 - Step 6: Final answer
x = 36,834.84
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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.