Finding the Fourth Proportional to 76,736,006.40, 115,104,009.60 and 76,288,108.80
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Solution
The fourth proportional to 76,736,006.40, 115,104,009.60 and 76,288,108.80 is: 114,432,163.20
Step by Step Solution
- Step 1: Write the proportion equation
76,736,006.40 : 115,104,009.60 = 76,288,108.80 : x - Step 2: Convert to fraction form
76,736,006.40/115,104,009.60 = 76,288,108.80/x - Step 3: Cross multiply
76,736,006.40x = 115,104,009.60 × 76,288,108.80 - Step 4: Simplify right side
76,736,006.40x = 8,781,067,207,681,044 - Step 5: Solve for x
x = 8,781,067,207,681,044/76,736,006.40 - Step 6: Final answer
x = 114,432,163.20
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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.