Finding the Fourth Proportional to 76,477.87, 105,567.91 and 65,679.39
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Solution
The fourth proportional to 76,477.87, 105,567.91 and 65,679.39 is: 90,661.99
Step by Step Solution
- Step 1: Write the proportion equation
76,477.87 : 105,567.91 = 65,679.39 : x - Step 2: Convert to fraction form
76,477.87/105,567.91 = 65,679.39/x - Step 3: Cross multiply
76,477.87x = 105,567.91 × 65,679.39 - Step 4: Simplify right side
76,477.87x = 6,933,635,768.18 - Step 5: Solve for x
x = 6,933,635,768.18/76,477.87 - Step 6: Final answer
x = 90,661.99
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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.