Finding the Fourth Proportional to 30,995,275.48, 42,755,668.70 and 19,372,668.12
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Solution
The fourth proportional to 30,995,275.48, 42,755,668.70 and 19,372,668.12 is: 26,723,149.48
Step by Step Solution
- Step 1: Write the proportion equation
30,995,275.48 : 42,755,668.70 = 19,372,668.12 : x - Step 2: Convert to fraction form
30,995,275.48/42,755,668.70 = 19,372,668.12/x - Step 3: Cross multiply
30,995,275.48x = 42,755,668.70 × 19,372,668.12 - Step 4: Simplify right side
30,995,275.48x = 828,291,379,973,772 - Step 5: Solve for x
x = 828,291,379,973,772/30,995,275.48 - Step 6: Final answer
x = 26,723,149.48
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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.