Finding the Fourth Proportional to 76,589,126.12, 105,678,538.84 and 45,652,174.04
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Solution
The fourth proportional to 76,589,126.12, 105,678,538.84 and 45,652,174.04 is: 62,991,383.92
Step by Step Solution
- Step 1: Write the proportion equation
76,589,126.12 : 105,678,538.84 = 45,652,174.04 : x - Step 2: Convert to fraction form
76,589,126.12/105,678,538.84 = 45,652,174.04/x - Step 3: Cross multiply
76,589,126.12x = 105,678,538.84 × 45,652,174.04 - Step 4: Simplify right side
76,589,126.12x = 4,824,455,047,416,580 - Step 5: Solve for x
x = 4,824,455,047,416,580/76,589,126.12 - Step 6: Final answer
x = 62,991,383.92
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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.