Finding the Fourth Proportional to 72,292,991.99, 99,764,447.13 and 39,253,305.02
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Solution
The fourth proportional to 72,292,991.99, 99,764,447.13 and 39,253,305.02 is: 54,169,625.10
Step by Step Solution
- Step 1: Write the proportion equation
72,292,991.99 : 99,764,447.13 = 39,253,305.02 : x - Step 2: Convert to fraction form
72,292,991.99/99,764,447.13 = 39,253,305.02/x - Step 3: Cross multiply
72,292,991.99x = 99,764,447.13 × 39,253,305.02 - Step 4: Simplify right side
72,292,991.99x = 3,916,084,272,846,731 - Step 5: Solve for x
x = 3,916,084,272,846,731/72,292,991.99 - Step 6: Final answer
x = 54,169,625.10
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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.