Finding the Fourth Proportional to 76,323.55, 105,332.97 and 42,342.99
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Solution
The fourth proportional to 76,323.55, 105,332.97 and 42,342.99 is: 58,436.92
Step by Step Solution
- Step 1: Write the proportion equation
76,323.55 : 105,332.97 = 42,342.99 : x - Step 2: Convert to fraction form
76,323.55/105,332.97 = 42,342.99/x - Step 3: Cross multiply
76,323.55x = 105,332.97 × 42,342.99 - Step 4: Simplify right side
76,323.55x = 4,460,112,895.38 - Step 5: Solve for x
x = 4,460,112,895.38/76,323.55 - Step 6: Final answer
x = 58,436.92
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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.