Finding the Fourth Proportional to 81,584,734.80, 122,377,102.20 and 30,464,047.20
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Solution
The fourth proportional to 81,584,734.80, 122,377,102.20 and 30,464,047.20 is: 45,696,070.80
Step by Step Solution
- Step 1: Write the proportion equation
81,584,734.80 : 122,377,102.20 = 30,464,047.20 : x - Step 2: Convert to fraction form
81,584,734.80/122,377,102.20 = 30,464,047.20/x - Step 3: Cross multiply
81,584,734.80x = 122,377,102.20 × 30,464,047.20 - Step 4: Simplify right side
81,584,734.80x = 3,728,101,817,620,024 - Step 5: Solve for x
x = 3,728,101,817,620,024/81,584,734.80 - Step 6: Final answer
x = 45,696,070.80
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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.