Finding the Fourth Proportional to 49,832,743.20, 74,668,633.20 and 28,203,021.60
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Solution
The fourth proportional to 49,832,743.20, 74,668,633.20 and 28,203,021.60 is: 42,258,983.55
Step by Step Solution
- Step 1: Write the proportion equation
49,832,743.20 : 74,668,633.20 = 28,203,021.60 : x - Step 2: Convert to fraction form
49,832,743.20/74,668,633.20 = 28,203,021.60/x - Step 3: Cross multiply
49,832,743.20x = 74,668,633.20 × 28,203,021.60 - Step 4: Simplify right side
49,832,743.20x = 2,105,881,074,982,077.25 - Step 5: Solve for x
x = 2,105,881,074,982,077.25/49,832,743.20 - Step 6: Final answer
x = 42,258,983.55
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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.