Finding the Fourth Proportional to 81,937,208.40, 122,905,812.60 and 21,352,934.40
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Solution
The fourth proportional to 81,937,208.40, 122,905,812.60 and 21,352,934.40 is: 32,029,401.60
Step by Step Solution
- Step 1: Write the proportion equation
81,937,208.40 : 122,905,812.60 = 21,352,934.40 : x - Step 2: Convert to fraction form
81,937,208.40/122,905,812.60 = 21,352,934.40/x - Step 3: Cross multiply
81,937,208.40x = 122,905,812.60 × 21,352,934.40 - Step 4: Simplify right side
81,937,208.40x = 2,624,399,753,826,493 - Step 5: Solve for x
x = 2,624,399,753,826,493/81,937,208.40 - Step 6: Final answer
x = 32,029,401.60
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.