Finding the Fourth Proportional to 72,021,206.16, 99,389,256.12 and 38,981,449.26
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Solution
The fourth proportional to 72,021,206.16, 99,389,256.12 and 38,981,449.26 is: 53,794,395.44
Step by Step Solution
- Step 1: Write the proportion equation
72,021,206.16 : 99,389,256.12 = 38,981,449.26 : x - Step 2: Convert to fraction form
72,021,206.16/99,389,256.12 = 38,981,449.26/x - Step 3: Cross multiply
72,021,206.16x = 99,389,256.12 × 38,981,449.26 - Step 4: Simplify right side
72,021,206.16x = 3,874,337,244,430,924.50 - Step 5: Solve for x
x = 3,874,337,244,430,924.50/72,021,206.16 - Step 6: Final answer
x = 53,794,395.44
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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.