Finding the Fourth Proportional to 77,428.68, 116,214.30 and 47,904.18
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Solution
The fourth proportional to 77,428.68, 116,214.30 and 47,904.18 is: 71,900.37
Step by Step Solution
- Step 1: Write the proportion equation
77,428.68 : 116,214.30 = 47,904.18 : x - Step 2: Convert to fraction form
77,428.68/116,214.30 = 47,904.18/x - Step 3: Cross multiply
77,428.68x = 116,214.30 × 47,904.18 - Step 4: Simplify right side
77,428.68x = 5,567,150,745.77 - Step 5: Solve for x
x = 5,567,150,745.77/77,428.68 - Step 6: Final answer
x = 71,900.37
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1.5x scale
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.