Finding the Fourth Proportional to 98,640,739.80, 147,961,109.70 and 53,291,107.80
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Solution
The fourth proportional to 98,640,739.80, 147,961,109.70 and 53,291,107.80 is: 79,936,661.70
Step by Step Solution
- Step 1: Write the proportion equation
98,640,739.80 : 147,961,109.70 = 53,291,107.80 : x - Step 2: Convert to fraction form
98,640,739.80/147,961,109.70 = 53,291,107.80/x - Step 3: Cross multiply
98,640,739.80x = 147,961,109.70 × 53,291,107.80 - Step 4: Simplify right side
98,640,739.80x = 7,885,011,447,230,325 - Step 5: Solve for x
x = 7,885,011,447,230,325/98,640,739.80 - Step 6: Final answer
x = 79,936,661.70
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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.