Finding the Fourth Proportional to 94,637,603.12, 130,481,555.64 and 78,979,149.68
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Solution
The fourth proportional to 94,637,603.12, 130,481,555.64 and 78,979,149.68 is: 108,892,469.52
Step by Step Solution
- Step 1: Write the proportion equation
94,637,603.12 : 130,481,555.64 = 78,979,149.68 : x - Step 2: Convert to fraction form
94,637,603.12/130,481,555.64 = 78,979,149.68/x - Step 3: Cross multiply
94,637,603.12x = 130,481,555.64 × 78,979,149.68 - Step 4: Simplify right side
94,637,603.12x = 10,305,322,313,370,810 - Step 5: Solve for x
x = 10,305,322,313,370,810/94,637,603.12 - Step 6: Final answer
x = 108,892,469.52
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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.