Finding the Fourth Proportional to 112,639.75, 155,447.73 and 62,338.75
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Solution
The fourth proportional to 112,639.75, 155,447.73 and 62,338.75 is: 86,030.17
Step by Step Solution
- Step 1: Write the proportion equation
112,639.75 : 155,447.73 = 62,338.75 : x - Step 2: Convert to fraction form
112,639.75/155,447.73 = 62,338.75/x - Step 3: Cross multiply
112,639.75x = 155,447.73 × 62,338.75 - Step 4: Simplify right side
112,639.75x = 9,690,417,178.54 - Step 5: Solve for x
x = 9,690,417,178.54/112,639.75 - Step 6: Final answer
x = 86,030.17
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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.