Finding the Fourth Proportional to 83,800.28, 115,531.20 and 56,896.09
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Solution
The fourth proportional to 83,800.28, 115,531.20 and 56,896.09 is: 78,439.75
Step by Step Solution
- Step 1: Write the proportion equation
83,800.28 : 115,531.20 = 56,896.09 : x - Step 2: Convert to fraction form
83,800.28/115,531.20 = 56,896.09/x - Step 3: Cross multiply
83,800.28x = 115,531.20 × 56,896.09 - Step 4: Simplify right side
83,800.28x = 6,573,273,264.18 - Step 5: Solve for x
x = 6,573,273,264.18/83,800.28 - Step 6: Final answer
x = 78,439.75
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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.