Finding the Fourth Proportional to 83,985.70, 125,364.02 and 74,021.44
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Solution
The fourth proportional to 83,985.70, 125,364.02 and 74,021.44 is: 110,490.54
Step by Step Solution
- Step 1: Write the proportion equation
83,985.70 : 125,364.02 = 74,021.44 : x - Step 2: Convert to fraction form
83,985.70/125,364.02 = 74,021.44/x - Step 3: Cross multiply
83,985.70x = 125,364.02 × 74,021.44 - Step 4: Simplify right side
83,985.70x = 9,279,625,284.59 - Step 5: Solve for x
x = 9,279,625,284.59/83,985.70 - Step 6: Final answer
x = 110,490.54
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.