Finding the Fourth Proportional to 85,307.86, 117,731.52 and 47,074.99
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Solution
The fourth proportional to 85,307.86, 117,731.52 and 47,074.99 is: 64,967.17
Step by Step Solution
- Step 1: Write the proportion equation
85,307.86 : 117,731.52 = 47,074.99 : x - Step 2: Convert to fraction form
85,307.86/117,731.52 = 47,074.99/x - Step 3: Cross multiply
85,307.86x = 117,731.52 × 47,074.99 - Step 4: Simplify right side
85,307.86x = 5,542,210,126.68 - Step 5: Solve for x
x = 5,542,210,126.68/85,307.86 - Step 6: Final answer
x = 64,967.17
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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.