Finding the Fourth Proportional to 75,139.14, 103,691.85 and 43,307.82
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Solution
The fourth proportional to 75,139.14, 103,691.85 and 43,307.82 is: 59,764.70
Step by Step Solution
- Step 1: Write the proportion equation
75,139.14 : 103,691.85 = 43,307.82 : x - Step 2: Convert to fraction form
75,139.14/103,691.85 = 43,307.82/x - Step 3: Cross multiply
75,139.14x = 103,691.85 × 43,307.82 - Step 4: Simplify right side
75,139.14x = 4,490,667,975.27 - Step 5: Solve for x
x = 4,490,667,975.27/75,139.14 - Step 6: Final answer
x = 59,764.70
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1.5x scale
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.