Finding the Fourth Proportional to 99,409,539.51, 137,067,780.56 and 68,062,788.99
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Solution
The fourth proportional to 99,409,539.51, 137,067,780.56 and 68,062,788.99 is: 93,846,279.45
Step by Step Solution
- Step 1: Write the proportion equation
99,409,539.51 : 137,067,780.56 = 68,062,788.99 : x - Step 2: Convert to fraction form
99,409,539.51/137,067,780.56 = 68,062,788.99/x - Step 3: Cross multiply
99,409,539.51x = 137,067,780.56 × 68,062,788.99 - Step 4: Simplify right side
99,409,539.51x = 9,329,215,425,242,590 - Step 5: Solve for x
x = 9,329,215,425,242,590/99,409,539.51 - Step 6: Final answer
x = 93,846,279.45
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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.