Finding the Fourth Proportional to 83,518.13, 125,284.48 and 21,188.63
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Solution
The fourth proportional to 83,518.13, 125,284.48 and 21,188.63 is: 31,784.79
Step by Step Solution
- Step 1: Write the proportion equation
83,518.13 : 125,284.48 = 21,188.63 : x - Step 2: Convert to fraction form
83,518.13/125,284.48 = 21,188.63/x - Step 3: Cross multiply
83,518.13x = 125,284.48 × 21,188.63 - Step 4: Simplify right side
83,518.13x = 2,654,606,491.46 - Step 5: Solve for x
x = 2,654,606,491.46/83,518.13 - Step 6: Final answer
x = 31,784.79
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.