Finding the Fourth Proportional to 99,070.19, 136,716.85 and 56,629.63
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Solution
The fourth proportional to 99,070.19, 136,716.85 and 56,629.63 is: 78,148.88
Step by Step Solution
- Step 1: Write the proportion equation
99,070.19 : 136,716.85 = 56,629.63 : x - Step 2: Convert to fraction form
99,070.19/136,716.85 = 56,629.63/x - Step 3: Cross multiply
99,070.19x = 136,716.85 × 56,629.63 - Step 4: Simplify right side
99,070.19x = 7,742,224,553.41 - Step 5: Solve for x
x = 7,742,224,553.41/99,070.19 - Step 6: Final answer
x = 78,148.88
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.