Finding the Fourth Proportional to 90,788,392.53, 125,141,622.84 and 61,409,010.92
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Solution
The fourth proportional to 90,788,392.53, 125,141,622.84 and 61,409,010.92 is: 84,645,438.35
Step by Step Solution
- Step 1: Write the proportion equation
90,788,392.53 : 125,141,622.84 = 61,409,010.92 : x - Step 2: Convert to fraction form
90,788,392.53/125,141,622.84 = 61,409,010.92/x - Step 3: Cross multiply
90,788,392.53x = 125,141,622.84 × 61,409,010.92 - Step 4: Simplify right side
90,788,392.53x = 7,684,823,282,902,373 - Step 5: Solve for x
x = 7,684,823,282,902,373/90,788,392.53 - Step 6: Final answer
x = 84,645,438.35
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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.