Finding the Fourth Proportional to 30,121,173.80, 41,567,541.90 and 16,370,138.60
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Solution
The fourth proportional to 30,121,173.80, 41,567,541.90 and 16,370,138.60 is: 22,590,966.30
Step by Step Solution
- Step 1: Write the proportion equation
30,121,173.80 : 41,567,541.90 = 16,370,138.60 : x - Step 2: Convert to fraction form
30,121,173.80/41,567,541.90 = 16,370,138.60/x - Step 3: Cross multiply
30,121,173.80x = 41,567,541.90 × 16,370,138.60 - Step 4: Simplify right side
30,121,173.80x = 680,466,422,164,307.25 - Step 5: Solve for x
x = 680,466,422,164,307.25/30,121,173.80 - Step 6: Final answer
x = 22,590,966.30
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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.