Finding the Fourth Proportional to 128,902,612.80, 193,352,023.96 and 31,858,328.84
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Solution
The fourth proportional to 128,902,612.80, 193,352,023.96 and 31,858,328.84 is: 47,787,024.85
Step by Step Solution
- Step 1: Write the proportion equation
128,902,612.80 : 193,352,023.96 = 31,858,328.84 : x - Step 2: Convert to fraction form
128,902,612.80/193,352,023.96 = 31,858,328.84/x - Step 3: Cross multiply
128,902,612.80x = 193,352,023.96 × 31,858,328.84 - Step 4: Simplify right side
128,902,612.80x = 6,159,872,361,197,239 - Step 5: Solve for x
x = 6,159,872,361,197,239/128,902,612.80 - Step 6: Final answer
x = 47,787,024.85
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.