Finding the Fourth Proportional to 77,126.36, 115,369.64 and 72,402.44
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Solution
The fourth proportional to 77,126.36, 115,369.64 and 72,402.44 is: 108,303.35
Step by Step Solution
- Step 1: Write the proportion equation
77,126.36 : 115,369.64 = 72,402.44 : x - Step 2: Convert to fraction form
77,126.36/115,369.64 = 72,402.44/x - Step 3: Cross multiply
77,126.36x = 115,369.64 × 72,402.44 - Step 4: Simplify right side
77,126.36x = 8,353,043,437.92 - Step 5: Solve for x
x = 8,353,043,437.92/77,126.36 - Step 6: Final answer
x = 108,303.35
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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.