Finding the Fourth Proportional to 83,893.12, 115,774.80 and 46,169.68
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Solution
The fourth proportional to 83,893.12, 115,774.80 and 46,169.68 is: 63,715.42
Step by Step Solution
- Step 1: Write the proportion equation
83,893.12 : 115,774.80 = 46,169.68 : x - Step 2: Convert to fraction form
83,893.12/115,774.80 = 46,169.68/x - Step 3: Cross multiply
83,893.12x = 115,774.80 × 46,169.68 - Step 4: Simplify right side
83,893.12x = 5,345,285,468.06 - Step 5: Solve for x
x = 5,345,285,468.06/83,893.12 - Step 6: Final answer
x = 63,715.42
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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.