Finding the Fourth Proportional to 83,972.88, 115,896.96 and 57,097.08
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Solution
The fourth proportional to 83,972.88, 115,896.96 and 57,097.08 is: 78,803.75
Step by Step Solution
- Step 1: Write the proportion equation
83,972.88 : 115,896.96 = 57,097.08 : x - Step 2: Convert to fraction form
83,972.88/115,896.96 = 57,097.08/x - Step 3: Cross multiply
83,972.88x = 115,896.96 × 57,097.08 - Step 4: Simplify right side
83,972.88x = 6,617,377,996.88 - Step 5: Solve for x
x = 6,617,377,996.88/83,972.88 - Step 6: Final answer
x = 78,803.75
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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.