Finding the Fourth Proportional to 98,140,663.70, 135,431,783.12 and 53,488,045.70
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Solution
The fourth proportional to 98,140,663.70, 135,431,783.12 and 53,488,045.70 is: 73,812,231.66
Step by Step Solution
- Step 1: Write the proportion equation
98,140,663.70 : 135,431,783.12 = 53,488,045.70 : x - Step 2: Convert to fraction form
98,140,663.70/135,431,783.12 = 53,488,045.70/x - Step 3: Cross multiply
98,140,663.70x = 135,431,783.12 × 53,488,045.70 - Step 4: Simplify right side
98,140,663.70x = 7,243,981,404,755,049 - Step 5: Solve for x
x = 7,243,981,404,755,049/98,140,663.70 - Step 6: Final answer
x = 73,812,231.66
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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.