Finding the Fourth Proportional to 39,121,570.40, 58,626,368.40 and 28,805,928.80
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Solution
The fourth proportional to 39,121,570.40, 58,626,368.40 and 28,805,928.80 is: 43,167,668.80
Step by Step Solution
- Step 1: Write the proportion equation
39,121,570.40 : 58,626,368.40 = 28,805,928.80 : x - Step 2: Convert to fraction form
39,121,570.40/58,626,368.40 = 28,805,928.80/x - Step 3: Cross multiply
39,121,570.40x = 58,626,368.40 × 28,805,928.80 - Step 4: Simplify right side
39,121,570.40x = 1,688,786,993,932,970 - Step 5: Solve for x
x = 1,688,786,993,932,970/39,121,570.40 - Step 6: Final answer
x = 43,167,668.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.