Finding the Fourth Proportional to 86,978.63, 130,476.09 and 27,800.21
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Solution
The fourth proportional to 86,978.63, 130,476.09 and 27,800.21 is: 41,702.92
Step by Step Solution
- Step 1: Write the proportion equation
86,978.63 : 130,476.09 = 27,800.21 : x - Step 2: Convert to fraction form
86,978.63/130,476.09 = 27,800.21/x - Step 3: Cross multiply
86,978.63x = 130,476.09 × 27,800.21 - Step 4: Simplify right side
86,978.63x = 3,627,262,701.98 - Step 5: Solve for x
x = 3,627,262,701.98/86,978.63 - Step 6: Final answer
x = 41,702.92
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.