Finding the Fourth Proportional to 75,138.39, 103,690.82 and 43,307.07
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Solution
The fourth proportional to 75,138.39, 103,690.82 and 43,307.07 is: 59,763.66
Step by Step Solution
- Step 1: Write the proportion equation
75,138.39 : 103,690.82 = 43,307.07 : x - Step 2: Convert to fraction form
75,138.39/103,690.82 = 43,307.07/x - Step 3: Cross multiply
75,138.39x = 103,690.82 × 43,307.07 - Step 4: Simplify right side
75,138.39x = 4,490,545,383.56 - Step 5: Solve for x
x = 4,490,545,383.56/75,138.39 - Step 6: Final answer
x = 59,763.66
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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.