Finding the Fourth Proportional to 75,955.14, 113,941.80 and 31,611.87
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Solution
The fourth proportional to 75,955.14, 113,941.80 and 31,611.87 is: 47,421.59
Step by Step Solution
- Step 1: Write the proportion equation
75,955.14 : 113,941.80 = 31,611.87 : x - Step 2: Convert to fraction form
75,955.14/113,941.80 = 31,611.87/x - Step 3: Cross multiply
75,955.14x = 113,941.80 × 31,611.87 - Step 4: Simplify right side
75,955.14x = 3,601,913,369.17 - Step 5: Solve for x
x = 3,601,913,369.17/75,955.14 - Step 6: Final answer
x = 47,421.59
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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.