Finding the Fourth Proportional to 72,442,067.95, 99,970,775 and 39,403,085.68
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Solution
The fourth proportional to 72,442,067.95, 99,970,775 and 39,403,085.68 is: 54,376,650.53
Step by Step Solution
- Step 1: Write the proportion equation
72,442,067.95 : 99,970,775 = 39,403,085.68 : x - Step 2: Convert to fraction form
72,442,067.95/99,970,775 = 39,403,085.68/x - Step 3: Cross multiply
72,442,067.95x = 99,970,775 × 39,403,085.68 - Step 4: Simplify right side
72,442,067.95x = 3,939,157,012,821,002 - Step 5: Solve for x
x = 3,939,157,012,821,002/72,442,067.95 - Step 6: Final answer
x = 54,376,650.53
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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.